fix: Make sure GitHub Actions PHPStan uses right sources

Author: jissereitsma

.github/workflows/static-tests.yml

@@ -58,5 +58,6 @@ jobs:
           test -f /tmp/magento/phpstan.neon || echo 'parameters:' > /tmp/magento/phpstan.neon
           echo "Testing for PHPStan level $PHPSTAN_LEVEL"
           cd /tmp/magento
-          php -d memory_limit=4G vendor/bin/phpstan analyse --level $PHPSTAN_LEVEL ${GITHUB_WORKSPACE}
+          export MODULE_PATH=$(realpath vendor/${COMPOSER_NAME})
+          php -d memory_limit=4G vendor/bin/phpstan analyse --level $PHPSTAN_LEVEL $MODULE_PATH