Fix behat unstable version

Author: yoanm

.github/workflows/reusable-CI-workflow.yml

@@ -164,7 +164,7 @@ jobs:
     name: Nightly - PHP ${{ matrix.php-version }} & Symfony ${{ matrix.symfony-version }}
     runs-on: ubuntu-latest
     env:
-      COMPOSER_OPTIONS: '--optimize-autoloader --ignore-platform-req=php+'
+      COMPOSER_OPTIONS: '--optimize-autoloader --prefer-dist --ignore-platform-req=php+'
     continue-on-error: true
     needs: [ static-checks, tests ]
     strategy: