Remove "--ignore-platform-reqs" flag (broken dependencies in CI)

.github/workflows/tests.yml

@@ -36,7 +36,7 @@ jobs:
         with:
           timeout_minutes: 5
           max_attempts: 5
-          command: composer update --${{ matrix.stability }} --ignore-platform-reqs --prefer-dist --no-interaction --no-progress
+          command: composer update --${{ matrix.stability }} --prefer-dist --no-interaction --no-progress
       - name: Execute Unit Tests
         run: composer test:unit
       - name: Execute Functional Tests