chore: remove deprecated --no-suggest

Author: kenjis

.github/workflows/phpunit.yml

@@ -59,11 +59,11 @@ jobs:
 
       - name: Install lowest dependencies
         if: ${{ matrix.dependencies == 'lowest' }}
-        run: composer update --prefer-lowest --no-interaction --no-progress --no-suggest
+        run: composer update --prefer-lowest --no-interaction --no-progress
 
       - name: Install highest dependencies
         if: ${{ matrix.dependencies == 'highest' }}
-        run: composer update --no-interaction --no-progress --no-suggest
+        run: composer update --no-interaction --no-progress
 
       - name: Run test suite
         run: ./vendor/bin/phpunit --coverage-clover=coverage.xml --coverage-text