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

Author: renovate[bot]

.github/workflows/docker.yml

@@ -23,7 +23,7 @@ jobs:
       TEST_TAG: ${{ github.repository }}:test
     steps:
       - name: Checkout
-        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
 
       - name: Docker meta (base)
         id: meta-base