Tweak QA file.

Author: Crell

.github/workflows/quality-assurance.yaml

@@ -21,5 +21,5 @@ jobs:
                   php-version: ${{ matrix.php }}
                   coverage: xdebug
                   tools: composer:v2
-            - run: composer update --no-progress ${{ matrix.composer-flags }}
+            - run: composer install --no-progress ${{ matrix.composer-flags }}
             - run: vendor/bin/phpunit ${{ matrix.phpunit-flags }}