Update Maven build command to include coveralls report

Author: yangziwen

.github/workflows/maven.yml

@@ -28,5 +28,5 @@ jobs:
         distribution: 'temurin'
         # cache: maven
     - name: Build with Maven
-      run: mvn -B package --file pom.xml
+      run: mvn -B package --file pom.xml coveralls:report