chore(deps): update actions/checkout action to v7 (#180)

Author: renovate-bot

.github/workflows/skills-generate.yml

@@ -29,7 +29,7 @@ jobs:
       contents: write
     steps:
       - name: Check out PR branch
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
         with:
           ref: ${{ github.head_ref }}