build(deps): bump the gatsby-dependencies group across 1 directory with 10 updates

Bumps the gatsby-dependencies group with 9 updates in the / directory:

| Package | From | To |
| --- | --- | --- |
| [gatsby](https://github.com/gatsbyjs/gatsby) | `5.14.5` | `5.15.0` |
| [gatsby-plugin-image](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-image) | `3.14.0` | `3.15.0` |
| [gatsby-plugin-manifest](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-manifest) | `5.14.0` | `5.15.0` |
| [gatsby-plugin-offline](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-offline) | `6.14.0` | `6.15.0` |
| [gatsby-plugin-react-helmet](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-react-helmet) | `6.14.0` | `6.15.0` |
| [gatsby-plugin-sass](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-sass) | `6.14.0` | `6.15.0` |
| [gatsby-plugin-sharp](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-sharp) | `5.14.0` | `5.15.0` |
| [gatsby-source-filesystem](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-source-filesystem) | `5.14.0` | `5.15.0` |
| [gatsby-transformer-sharp](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-transformer-sharp) | `5.14.0` | `5.15.0` |



Updates `gatsby` from 5.14.5 to 5.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/compare/gatsby@5.14.5...gatsby@5.15.0)

Updates `gatsby-plugin-image` from 3.14.0 to 3.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-image/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-plugin-image@3.15.0/packages/gatsby-plugin-image)

Updates `gatsby-plugin-manifest` from 5.14.0 to 5.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-manifest/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-plugin-manifest@5.15.0/packages/gatsby-plugin-manifest)

Updates `gatsby-plugin-offline` from 6.14.0 to 6.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-offline/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-plugin-offline@6.15.0/packages/gatsby-plugin-offline)

Updates `gatsby-plugin-react-helmet` from 6.14.0 to 6.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-react-helmet/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-plugin-react-helmet@6.15.0/packages/gatsby-plugin-react-helmet)

Updates `gatsby-plugin-sass` from 6.14.0 to 6.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-sass/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-plugin-sass@6.15.0/packages/gatsby-plugin-sass)

Updates `gatsby-plugin-sharp` from 5.14.0 to 5.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-sharp/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-plugin-sharp@5.15.0/packages/gatsby-plugin-sharp)

Updates `gatsby-plugin-typescript` from 5.14.0 to 5.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-typescript/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-plugin-typescript@5.15.0/packages/gatsby-plugin-typescript)

Updates `gatsby-source-filesystem` from 5.14.0 to 5.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-source-filesystem/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-source-filesystem@5.15.0/packages/gatsby-source-filesystem)

Updates `gatsby-transformer-sharp` from 5.14.0 to 5.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-transformer-sharp/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-transformer-sharp@5.15.0/packages/gatsby-transformer-sharp)

---
updated-dependencies:
- dependency-name: gatsby
  dependency-version: 5.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby-dependencies
- dependency-name: gatsby-plugin-image
  dependency-version: 3.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby-dependencies
- dependency-name: gatsby-plugin-manifest
  dependency-version: 5.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby-dependencies
- dependency-name: gatsby-plugin-offline
  dependency-version: 6.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby-dependencies
- dependency-name: gatsby-plugin-react-helmet
  dependency-version: 6.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby-dependencies
- dependency-name: gatsby-plugin-sass
  dependency-version: 6.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby-dependencies
- dependency-name: gatsby-plugin-sharp
  dependency-version: 5.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby-dependencies
- dependency-name: gatsby-plugin-typescript
  dependency-version: 5.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby-dependencies
- dependency-name: gatsby-source-filesystem
  dependency-version: 5.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby-dependencies
- dependency-name: gatsby-transformer-sharp
  dependency-version: 5.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby-dependencies
...

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Author: dependabot[bot]