chore: move workflow to .github/workflows and add next-upgrade branch trigger

- Move .github_workflows_test.yml to proper .github/workflows/test.yml location
- Add next-upgrade branch to workflow triggers for push and PR
- This ensures GitHub Actions picks up the Cypress test suite

Author: SeanMcTernan

.github_workflows_test.yml .github/workflows/test.yml.github_workflows_test.yml renamed to .github/workflows/test.yml

@@ -5,9 +5,9 @@ name: Cypress Tests
 
 on:
   push:
-    branches: [ main ]
+    branches: [ main, next-upgrade ]
   pull_request:
-    branches: [ main ]
+    branches: [ main, next-upgrade ]
 
 jobs:
   cypress-run: