Merge pull request #835 from playframework/dependabot/github_actions/…

…5.3.x/actions/checkout-4

[5.3.x] Bump actions/checkout from 3 to 4

.github/workflows/dependency-graph.yml

@@ -17,7 +17,7 @@ jobs:
     name: Submit dependencies to GitHub
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
           ref: ${{ inputs.ref }}