Bump actions/checkout from 3 to 4 (#230)

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] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/build-and-deploy.yml

@@ -27,7 +27,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       name: Checkout
 
     - name: Set environment variables (push)
@@ -124,7 +124,7 @@ jobs:
         token: ${{ secrets.GITHUB_TOKEN }}
 
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Deploy App to Review
       id: deploy_review
@@ -161,7 +161,7 @@ jobs:
         environment: [qa,staging]
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Deploy app to ${{ matrix.environment }}
       id: deploy_app_before_production
@@ -181,7 +181,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Deploy app to production
       id: deploy_production

.github/workflows/ci.yml

@@ -29,7 +29,7 @@ jobs:
       GOVUK_NOTIFY_APPLICATION_SUBMITTED_TEMPLATE_ID: ${{ secrets.GOVUK_NOTIFY_APPLICATION_SUBMITTED_TEMPLATE_ID }}
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Setup Node.js
         uses: actions/setup-node@v3
         with:
@@ -56,7 +56,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Install Ruby and gems
         uses: ruby/setup-ruby@v1
         with:

.github/workflows/delete-review-app.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - uses: azure/login@v1
         with: