ci(weekly-menu): assume the scoped role, add concurrency guard, pin actions

.github/workflows/weekly-menu.yml

@@ -12,6 +12,10 @@ permissions:
   id-token: write
   contents: read
 
+concurrency:
+  group: weekly-menu
+  cancel-in-progress: false
+
 jobs:
   scrape-and-publish:
     runs-on: ubuntu-latest
@@ -31,10 +35,10 @@ jobs:
             echo "SKIP_RUN=true" >> "$GITHUB_ENV"
           fi
 
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         if: env.SKIP_RUN != 'true'
 
-      - uses: actions/setup-python@v7
+      - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         if: env.SKIP_RUN != 'true'
         with:
           python-version: '3.12'
@@ -49,7 +53,7 @@ jobs:
         if: env.SKIP_RUN != 'true'
         uses: aws-actions/configure-aws-credentials@e6de054238d6b7531b4efff3b6587d9aade6a06c # v6
         with:
-          role-to-assume: ${{ secrets.AWS_DEPLOY_ROLE_ARN }}
+          role-to-assume: ${{ secrets.AWS_WEEKLY_MENU_ROLE_ARN }}
           aws-region: us-east-1
 
       - name: Scrape menu