fix(ci): extract version from tag for Homebrew formula update (#518)

The mislav/bump-homebrew-formula-action compares formula version against
the tag-name to determine if an update is needed. With our tag format
'redisctl-v0.7.3', the action was comparing '0.7.2' (from formula) against
'redisctl-v0.7.3' and incorrectly determining that 0.7.2 is newer.

This fix extracts just the version number (e.g., '0.7.3') from the full
tag name and passes 'v0.7.3' to the action for proper comparison, while
keeping the original tag for the download URL.

Author: joshrotenberg

.github/workflows/release.yml

@@ -289,12 +289,18 @@ jobs:
     if: ${{ always() && needs.host.result == 'success' && startsWith(needs.plan.outputs.tag, 'redisctl-v') }}
     runs-on: "ubuntu-22.04"
     steps:
+      - name: Extract version from tag
+        id: version
+        run: |
+          TAG="${{ needs.plan.outputs.tag }}"
+          VERSION="${TAG#redisctl-v}"
+          echo "version=$VERSION" >> $GITHUB_OUTPUT
       - uses: mislav/[email protected]
         with:
           formula-name: redisctl
           formula-path: Formula/redisctl.rb
           base-branch: main
-          tag-name: ${{ needs.plan.outputs.tag }}
+          tag-name: v${{ steps.version.outputs.version }}
           homebrew-tap: redis-developer/homebrew-tap
           download-url: "https://github.com/redis-developer/redisctl/releases/download/${{ needs.plan.outputs.tag }}/redisctl-x86_64-apple-darwin.tar.xz"
         env: