chore(deps): 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/docker-nginx.yml

@@ -21,7 +21,7 @@ jobs:
       contents: read
     steps:
       - name: Check out the repo
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v4
       - name: Set up Docker Buildx

.github/workflows/docker-php.yml

@@ -28,7 +28,7 @@ jobs:
       contents: read
     steps:
       - name: Check out the repo
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v4
       - name: Set up Docker Buildx

.github/workflows/shellcheck.yml

@@ -11,7 +11,7 @@ jobs:
     name: Shellcheck
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
     - name: Run ShellCheck
       uses: ludeeus/action-shellcheck@master
       with: