chore(deps): bump actions/checkout

Bumps the actions-major group with 1 update in the / directory: [actions/checkout](https://github.com/actions/checkout).


Updates `actions/checkout` from 4 to 7
- [Release notes](https://github.com/actions/checkout/releases)
- [Commits](actions/checkout@v4...v7)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/tests.yml

@@ -13,15 +13,15 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Check out Docs Agent
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           repository: Automattic/docs-agent
           ref: ${{ github.sha }}
           fetch-depth: 0
           persist-credentials: false
 
       - name: Check out Agents API
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           repository: Automattic/agents-api
           ref: 78e2dd409010f98fa4d26cdd72572117384ab18d

.github/workflows/validate.yml

@@ -10,11 +10,11 @@ jobs:
   validate:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         with:
           fetch-depth: 0
       - name: Checkout WP Codebox producer contract
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
         with:
           repository: Automattic/wp-codebox
           ref: a6fe2d208e990a8d04104aa74aacbb8d1539fbc1