Fix test code

Author: alexpott

tests/dcg/QuestionHelper.php

@@ -15,7 +15,7 @@ final class QuestionHelper extends BaseHelper {
   /**
    * {@inheritdoc}
    */
-  public function ask(InputInterface $input, OutputInterface $output, Question $question) {
+  public function ask(InputInterface $input, OutputInterface $output, Question $question): mixed {
     $question->setAutocompleterValues(NULL);
     $answer = parent::ask($input, $output, $question);
     // Write line after each input to make test output more readable.

tests/dcg/TestLogger.php

@@ -14,7 +14,7 @@ final class TestLogger extends AbstractLogger {
   /**
    * {@inheritdoc}
    */
-  public function log($level, $message, array $context = []) {
+  public function log($level, $message, array $context = []): void {
     $this->records[] = [
       'level' => $level,
       'message' => $message,