Update maven.yml

Display better error message for failing build.
diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index daead2c..2581b1c 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -32,6 +32,6 @@
       with:

         java-version: ${{ matrix.java }}

     - name: Build with Maven

-      run: mvn -V --file pom.xml

+      run: mvn -V -e --file pom.xml

 

 # For Java 11, you can be more strict: -DadditionalJOption=-Xdoclint/package:-org.apache.commons.configuration2.plist