Temporarily run GMT Dev Tests on pull request pushes

Author: weiji14

.github/workflows/ci_tests_dev.yaml

@@ -6,7 +6,7 @@ on:
   # push:
   #   branches: [ main ]
   pull_request:
-    types: [ready_for_review]
+    types: [opened, reopened, synchronize, ready_for_review]
     paths-ignore:
       - 'doc/**'
       - 'examples/**'