[stable-4.2] Bump actions/checkout from 3 to 4 (#4228)

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...v4)

---
updated-dependencies:
- dependency-name: actions/checkout
  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>

.github/workflows/backported-labels.yml

@@ -16,7 +16,7 @@ jobs:
         LABEL="backported-${VERSION}"
         echo "LABEL=${LABEL}" >> $GITHUB_ENV
 
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: 'Set $PR to PR number'
       run: |

.github/workflows/pr-checks.yml

@@ -10,7 +10,7 @@ jobs:
     steps:
 
     - name: "Checkout ansible-hub-ui (${{ github.ref }})"
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: "Install node 16"
       uses: actions/setup-node@v3
@@ -40,7 +40,7 @@ jobs:
     # need to checkout out head, the merge commit won't have any merges in history
     # also need more than 1 commit, assuming no PR will have more than 128
     - name: "Checkout ansible-hub-ui HEAD"
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         fetch-depth: 128
         ref: ${{ github.event.pull_request.head.sha }}

.github/workflows/stable-release.yml

@@ -17,7 +17,7 @@ jobs:
     steps:
 
     - name: "Checkout ansible-hub-ui (${{ github.ref }})"
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: "Set RELEASE_TAG"
       run: |