[GitHub Actions] Configure global flex to fix the build

Author: GSadee

.github/workflows/build.yml

@@ -111,6 +111,7 @@ jobs:
                 name: Restrict Symfony version
                 if: matrix.symfony != ''
                 run: |
+                    composer global config --no-plugins allow-plugins.symfony/flex true
                     composer global require --no-progress --no-scripts --no-plugins "symfony/flex:^1.10"
                     composer config extra.symfony.require "${{ matrix.symfony }}"
 

composer.json

@@ -80,6 +80,7 @@
     "config": {
         "sort-packages": true,
         "allow-plugins": {
+            "dealerdirect/phpcodesniffer-composer-installer": false,
             "symfony/flex": true
         }
     },