Bump actions/checkout from 6 to 7 (#307)

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/cp-phpunit.yml

@@ -40,7 +40,7 @@ jobs:
           sudo apt-get update
           sudo apt-get install subversion
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2

.github/workflows/deploy.yml

@@ -8,7 +8,7 @@ jobs:
    name: New tag
    runs-on: ubuntu-latest
    steps:
-   - uses: actions/checkout@v6
+   - uses: actions/checkout@v7
    - name: WordPress Plugin Deploy
      uses: 10up/action-wordpress-plugin-deploy@stable
      env:

.github/workflows/phpcs.yml

@@ -23,7 +23,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
         with:

.github/workflows/update-assets.yml

@@ -8,7 +8,7 @@ jobs:
     name: Push to trunk
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
     - name: WordPress.org plugin asset/readme update
       uses: 10up/action-wordpress-plugin-asset-update@stable
       env:

.github/workflows/wp-phpunit.yml

@@ -45,7 +45,7 @@ jobs:
           sudo apt-get update
           sudo apt-get install subversion
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2