Update runtime-interface-client_merge_to_main.yml

Author: Astraea Quinn S

.github/workflows/runtime-interface-client_merge_to_main.yml

@@ -49,7 +49,7 @@ jobs:
 
     - name: Build and install serialization dependency locally
       working-directory: ./aws-lambda-java-serialization
-      run: mvn clean install -DskipTests
+      run: mvn clean install
 
     - name: Test Runtime Interface Client xplatform build - Run 'build' target
       working-directory: ./aws-lambda-java-runtime-interface-client