enable phpstan in github workflow

Author: gregor-j

.github/workflows/php.yml

@@ -42,15 +42,15 @@ jobs:
         run: "php -v"
       - name: "lint PHP files"
         run: "php -l src/ tests/"
-#      - name: "install composer dependencies"
-#        run: "composer install --prefer-dist --no-progress"
-#      # PHPStan
-#      - name: "PHPStan static analysis"
-#        uses: "php-actions/phpstan@v3"
-#        with:
-#          php_version: "${{ matrix.php-version }}"
-#          configuration: "phpstan.neon"
-#          path: "src/ tests/"
+      - name: "install composer dependencies"
+        run: "composer install --prefer-dist --no-progress"
+      # PHPStan
+      - name: "PHPStan static analysis"
+        uses: "php-actions/phpstan@v3"
+        with:
+          php_version: "${{ matrix.php-version }}"
+          configuration: "phpstan.neon"
+          path: "src/ tests/"
   # run unit tests
   phpunit:
     runs-on: "ubuntu-latest"