Bump actions/checkout from 6 to 7

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>

Author: dependabot[bot]

.github/workflows/lint.yml

@@ -10,13 +10,13 @@ jobs:
     name: Lint shell scripts
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: ludeeus/action-shellcheck@2.0.0
   validate:
     name: Validate devcontainer-feature.json files
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: devcontainers/action@v1
         with:
           base-path-to-features: ./src

.github/workflows/release.yml

@@ -23,7 +23,7 @@ jobs:
     if: ${{ github.ref == 'refs/heads/main' }}
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: devcontainers/action@v1
         with:
           base-path-to-features: ./src

.github/workflows/test.yml

@@ -23,7 +23,7 @@ jobs:
           - mcr.microsoft.com/devcontainers/base:ubuntu
     continue-on-error: true
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - run: |
           npx @devcontainers/cli features test \
             --base-image ${{ matrix.baseImage }} \
@@ -43,7 +43,7 @@ jobs:
           - shellcheck
     continue-on-error: true
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - run: |
           npx @devcontainers/cli features test \
             --features ${{ matrix.features }} \