Fix. CI/CD. GitHub action for testing added.

Author: Glomberg

.github/workflows/tests.yml

@@ -8,9 +8,6 @@ on: # event list
       - beta
       - master
   pull_request:
-    branches:
-      - dev
-      - master
 
 env: # environment variables (available in any part of the action)
   PHP_VERSION: 7.4