Bump actions/checkout from 6.0.2 to 6.0.3 (#82)

Bumps [actions/checkout](https://github.com/actions/checkout) from 6.0.2 to 6.0.3.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v6.0.2...v6.0.3)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: 6.0.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/hassfest.yaml

@@ -10,5 +10,5 @@ jobs:
   validate:
     runs-on: "ubuntu-latest"
     steps:
-        - uses: "actions/checkout@v6.0.2"
+        - uses: "actions/checkout@v6.0.3"
         - uses: home-assistant/actions/hassfest@master