Add colors to phpunit output

Author: dmitry-ivanov

.github/workflows/tests.yml

@@ -33,10 +33,10 @@ jobs:
         with:
           timeout_minutes: 5
           max_attempts: 5
-          command: composer update --prefer-dist --no-interaction --no-progress
+          command: composer update --prefer-dist --prefer-stable --no-interaction --no-progress
 
       - name: Execute tests
-        run: vendor/bin/phpunit --verbose --coverage-clover ./build/logs/clover.xml
+        run: vendor/bin/phpunit --verbose --colors=always --coverage-clover ./build/logs/clover.xml
 
       - name: Tests coverage
         uses: codecov/codecov-action@v1