Update workflows to use 0.3.x

Author: kabir

.github/workflows/build-and-test.yml

@@ -3,10 +3,10 @@ name: Build and Run Tests
 on:
   push:
     branches:
-      - main
+      - 0.3.x
   pull_request:
     branches:
-      - main
+      - 0.3.x
   workflow_dispatch:
 
 
@@ -36,6 +36,7 @@ jobs:
         with:
           repository: a2aproject/a2a-java
           path: a2a-java
+          ref: 0.3.x
       - name: Set up JDK 17
         uses: actions/setup-java@v4
         with:

.github/workflows/run-tck.yml

@@ -39,6 +39,7 @@ jobs:
         with:
           repository: a2aproject/a2a-java
           path: a2a-java
+          ref: 0.3.x
       - name: Checkout a2a-tck
         uses: actions/checkout@v4
         with: