chore: update branch on git workflow temporally

Author: glaubersilva

.github/workflows/unit-tests.yml

@@ -11,4 +11,4 @@ jobs:
         uses: impress-org/givewp-github-actions/.github/workflows/addon-tests.yml@master
         with:
             addon_slug: ADDON_ID
-            givewp_branch: develop
+            givewp_branch: fun/gateway-webhook-events-api