[skip-release] Update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/lint-test-build-push.yaml

@@ -9,7 +9,7 @@ jobs:
   lint-test:
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
 
       - uses: hadolint/hadolint-action@2332a7b74a6de0dda2e2221d575162eba76ba5e5 # v3.3.0