feat: add './gradlew test' to github build workflow

Signed-off-by: Dasun Abeykoon <[email protected]>

Author: dabeycorn

.github/workflows/build.yml

@@ -34,4 +34,6 @@ jobs:
           git commit -m "auto generated"
           git push
       - name: Build Robot Code
-        run: ./gradlew build
+        run: ./gradlew build
+      - name: Run Tests
+        run: ./gradlew test