fixes for phpunit tests

.github/workflows/phpunit.yml

@@ -1,10 +1,10 @@
 on: 
   push:
     branches:
-      - v2
+      - v5-develop
   pull_request:
     branches: 
-      - v2
+      - v5-develop
       
 name: phpunit
 jobs:

.github/workflows/release.yml

@@ -12,7 +12,7 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v1
         with:
-          ref: v2
+          ref: v5-stable
           
       - name: Copy .env file
         run: |