Fix CI on the main banches

Author: fabpot

.github/workflows/ci.yaml

@@ -4,7 +4,8 @@ on:
     pull_request:
     push:
         branches:
-            - 'main'
+            - '1.x'
+            - '2.x'
 
 env:
     SYMFONY_PHPUNIT_DIR: "$HOME/symfony-bridge/.phpunit"