Bump phpDocumentor/phpstan-ga from 0.12.3 to 0.12.9

Bumps [phpDocumentor/phpstan-ga](https://github.com/phpDocumentor/phpstan-ga) from 0.12.3 to 0.12.9.
- [Release notes](https://github.com/phpDocumentor/phpstan-ga/releases)
- [Commits](phpDocumentor/phpstan-ga@0.12.3...6c5df17)

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/push.yml

@@ -161,7 +161,7 @@ jobs:
           args: install --no-interaction --prefer-dist --optimize-autoloader
 
       - name: PHPStan
-        uses: phpDocumentor/phpstan-ga@0.12.3
+        uses: phpDocumentor/phpstan-ga@0.12.9
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with: