test: triggering tests on changes and allow cancelling in-progress CI test jobs (#4743)

.github/workflows/tool-test-sdks.yaml

@@ -4,6 +4,13 @@ on:
   pull_request:
     branches:
       - main
+    paths:
+      - sdks/**
+
+concurrency:
+  group: sdk-tests-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
 jobs:
   build:
     name: unit test for Node.js SDK