chore(deps): update namespacelabs/nscloud-checkout-action action to v7 (#367)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/branch.yml

@@ -39,7 +39,7 @@ jobs:
     runs-on: namespace-profile-btp-docs
     steps:
       - name: Checkout
-        uses: namespacelabs/nscloud-checkout-action@v6
+        uses: namespacelabs/nscloud-checkout-action@v7
         with:
           fetch-depth: 2