ci: bump cask via mislav action with v#{version} interpolation preserved

Pass the download-url with a literal Ruby #{version} interpolation so the
action writes it verbatim into the cask's url stanza. Ruby evaluates it at
cask load time. Avoids brew audit's "URL is unversioned" false-positive
without giving up the action.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: abizer

.github/workflows/release.yml

@@ -35,6 +35,10 @@ jobs:
       - name: Create zip
         run: ditto -c -k --keepParent wtop.app wtop.app.zip
 
+      - name: Compute sha256
+        id: sha
+        run: echo "sha256=$(shasum -a 256 wtop.app.zip | cut -d' ' -f1)" >> "$GITHUB_OUTPUT"
+
       - name: Create GitHub Release
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -44,29 +48,18 @@ jobs:
             --title "v${VERSION}" \
             --generate-notes
 
-      # Mislav's action rewrites the url stanza to a literal version, which
-      # trips brew audit's "URL is unversioned" rule. Hand-rolled sed preserves
-      # the v#{version} interpolation in the cask.
+      # download-url contains a literal Ruby interpolation (#{version}) so the
+      # cask's url stanza retains it — otherwise brew audit flags the URL as
+      # unversioned. Ruby evaluates #{version} at cask load time.
       - name: Bump homebrew cask
+        uses: mislav/bump-homebrew-formula-action@v4
+        with:
+          formula-name: wtop
+          formula-path: Casks/wtop.rb
+          homebrew-tap: abizer/homebrew-tap
+          base-branch: master
+          download-url: 'https://github.com/abizer/wtop/releases/download/v#{version}/wtop.app.zip'
+          download-sha256: ${{ steps.sha.outputs.sha256 }}
+          commit-message: "wtop {{version}}"
         env:
-          TAP_TOKEN: ${{ secrets.TAP_TOKEN }}
-        run: |
-          VERSION="${{ steps.version.outputs.version }}"
-          SHA=$(shasum -a 256 wtop.app.zip | cut -d' ' -f1)
-
-          git clone "https://x-access-token:${TAP_TOKEN}@github.com/abizer/homebrew-tap.git" tap
-          cd tap
-
-          sed -i '' "s|version \"[0-9]*\.[0-9]*\.[0-9]*\"|version \"${VERSION}\"|" Casks/wtop.rb
-          sed -i '' "s|sha256 \"[a-f0-9]*\"|sha256 \"${SHA}\"|" Casks/wtop.rb
-
-          if git diff --quiet Casks/wtop.rb; then
-            echo "cask already up to date for v${VERSION}"
-            exit 0
-          fi
-
-          git config user.name "github-actions[bot]"
-          git config user.email "github-actions[bot]@users.noreply.github.com"
-          git add Casks/wtop.rb
-          git commit -m "wtop ${VERSION}"
-          git push
+          COMMITTER_TOKEN: ${{ secrets.TAP_TOKEN }}