Fix phpunit version #10

Author: odan

.github/workflows/build.yml

@@ -35,7 +35,7 @@ jobs:
         run: composer validate
 
       - name: Install dependencies
-        run: composer install --prefer-dist --no-progress --no-suggest --ignore-platform-reqs
+        run: composer install --prefer-dist --no-progress --no-suggest
 
       - name: Run test suite
         run: composer check