chore(deps): update actions/checkout action to v6.0.3

Author: renovate[bot]

.github/workflows/docker-publish.yml

@@ -33,7 +33,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
 
       # Install the cosign tool except on PR
       # https://github.com/sigstore/cosign-installer