chore(deps): update actions/checkout action to v7

Author: renovate[bot]

.github/workflows/trunk-upgrade.yaml

@@ -21,7 +21,7 @@ jobs:
       pull-requests: write # needed by github-action-trunk-upgrade to write pull requests
     steps:
       - name: Checkout
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:
           persist-credentials: false