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

.github/workflows/api-tests.yml

   pull_request:
     branches:
       - main
+    paths:
+      - api/**
+
+concurrency:
+  group: api-tests-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
 
 jobs:
   test:
+    name: API Tests
     runs-on: ubuntu-latest
     strategy:
       matrix:

.github/workflows/style.yml

       - main
 
 concurrency:
-  group: dep-${{ github.head_ref || github.run_id }}
+  group: style-${{ github.head_ref || github.run_id }}
   cancel-in-progress: true
 
 jobs:

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

   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