Use the hash version of steps

Author: hsbt

.github/workflows/dependabot_automerge.yml

@@ -13,11 +13,11 @@ jobs:
     if: github.event.pull_request.user.login == 'dependabot[bot]' && github.repository == 'ruby/rake'
     steps:
       - name: Dependabot metadata
-        uses: dependabot/fetch-metadata@v2
+        uses: dependabot/fetch-metadata@08eff52bf64351f401fb50d4972fa95b9f2c2d1b # v2.4.0
         id: metadata
 
       - name: Wait for status checks
-        uses: lewagon/wait-on-check-action@v1.3.4
+        uses: lewagon/wait-on-check-action@ccfb013c15c8afb7bf2b7c028fb74dc5a068cccc # v1.3.4
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
           ref: ${{ github.event.pull_request.head.sha || github.sha }}

.github/workflows/gh-pages.yml

@@ -27,12 +27,12 @@ jobs:
           bundler-cache: true
       - name: Setup Pages
         id: pages
-        uses: actions/configure-pages@v5
+        uses: actions/configure-pages@983d7736d9b0ae728b81ab479565c72886d7745b # v5.0.0
       - name: Build with RDoc
         # Outputs to the './_site' directory by default
         run: bundle exec rake rdoc
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v3
+        uses: actions/upload-pages-artifact@56afc609e74202658d3ffba0e8f6dda462b719fa # v3.0.1
 
   deploy:
     environment:
@@ -43,4 +43,4 @@ jobs:
     steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v4
+        uses: actions/deploy-pages@d6db90164ac5ed86f2b6aed7e0febac5b3c0c03e # v4.0.5