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

Author: renovate[bot]

.github/workflows/shellcheck.yml

@@ -12,6 +12,6 @@ jobs:
     name: ShellCheck
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - name: Run ShellCheck
         run: find . -type f -name "*.sh" -exec shellcheck {} +