Merge pull request playframework#1123 from playframework/dependabot/github_actions/6.2.x/actions/checkout-7

[6.2.x] Bump actions/checkout from 6 to 7

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@v6
+      - uses: actions/checkout@v7
         with:
           fetch-depth: 0
           ref: ${{ inputs.ref }}