Merge pull request #455 from playframework/dependabot/github_actions/3.0.x/actions/checkout-6

[3.0.x] Bump actions/checkout from 5 to 6

Author: mkurz

.github/workflows/dependency-graph.yml

@@ -17,7 +17,7 @@ jobs:
     name: Submit dependencies to GitHub
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
           ref: ${{ inputs.ref }}