workflows/tests: run tap_syntax on stable brew

Signed-off-by: Michael Cho <[email protected]>

.github/workflows/tests.yml

@@ -27,6 +27,10 @@ permissions:
 jobs:
  tap_syntax:
  if: github.repository_owner == 'Homebrew'
+ strategy:
+ matrix:
+ stable: [false, true]
+ name: ${{ matrix.stable && 'tap_syntax (stable)' || 'tap_syntax' }}
  runs-on: ubuntu-22.04
  container:
  image: ghcr.io/homebrew/ubuntu22.04:master
@@ -40,13 +44,14 @@ jobs:
  core: true
  cask: false
  test-bot: true
+ stable: ${{ matrix.stable }}
 
  - name: Cache style cache
  uses: actions/cache@v4
  with:
  path: /home/linuxbrew/.cache/Homebrew/style
- key: style-cache-${{ github.sha }}
- restore-keys: style-cache-
+ key: style-cache-${{ matrix.stable && 'stable-' || '' }}${{ github.sha }}
+ restore-keys: style-cache-${{ matrix.stable && 'stable-' || '' }}
 
  - run: brew test-bot --only-tap-syntax