No --ignore-platform-reqs, must respect PHP version

Author: phpfui

.github/workflows/tests.yml

@@ -33,7 +33,7 @@ jobs:
 
       - name: Install dependencies
         run: |
-          composer update --${{ matrix.dependency-version }} --prefer-dist --no-interaction --ignore-platform-reqs
+          composer update --${{ matrix.dependency-version }} --prefer-dist --no-interaction
 
       - name: Execute tests
         run: vendor/bin/phpunit