Bump actions/checkout from 6 to 7 (#9)

Bumps [actions/checkout](https://github.com/actions/checkout) from 6 to 7.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v6...v7)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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/release.yml

@@ -63,7 +63,7 @@ jobs:
       group: create-release-${{ github.repository }}-${{ needs.normalize.outputs.version }}
       cancel-in-progress: false
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
         with:
           ref: ${{ github.event.repository.default_branch }}
           fetch-depth: 0

.github/workflows/validate.yaml

@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Run hassfest validation
         uses: home-assistant/actions/hassfest@master
@@ -29,7 +29,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Run HACS validation
         uses: hacs/action@main