build(deps-dev): bump @11ty/eleventy from 2.0.1 to 3.1.5

Bumps [@11ty/eleventy](https://github.com/11ty/eleventy) from 2.0.1 to 3.1.5.
- [Release notes](https://github.com/11ty/eleventy/releases)
- [Changelog](https://github.com/11ty/eleventy/blob/main/docs/release-instructions.md)
- [Commits](11ty/buildawesome@v2.0.1...v3.1.5)

---
updated-dependencies:
- dependency-name: "@11ty/eleventy"
  dependency-version: 3.1.5
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]