Fix: Allow pest conposer plugin

Author: secrethash

.github/workflows/run-tests.yml

@@ -31,7 +31,7 @@ jobs:
           echo "::add-matcher::${{ runner.tool_cache }}/phpunit.json"
 
       - name: Install dependencies
-        run: composer update --${{ matrix.stability }} --prefer-dist --no-interaction
+        run: composer config --no-plugins allow-plugins.pestphp/pest-plugin true && composer update --${{ matrix.stability }} --prefer-dist --no-interaction
 
       - name: Execute tests
         run: vendor/bin/pest