Create credentials_test

.github/workflows/credentials_test

@@ -0,0 +1,26 @@
+name: Credentials Test
+
+on:
+  pull_request:
+    branches:
+      - serving-publish  
+  push:
+    branches:
+      - serving-publish 
+
+permissions:
+  id-token: write
+  contents: read
+
+jobs:
+  test-aws-credentials:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Configure AWS Credentials
+        uses: aws-actions/configure-aws-credentials@v4
+        with:
+          role-to-assume: arn:aws:iam::185921645874:role/github-actions-djl-serving
+          aws-region: us-west-2
+      - name: Verify AWS Credentials
+        run: |
+          aws sts get-caller-identity