Set UTF-8 as default JVM encoding for the whole build
diff --git a/gradle.properties b/gradle.properties
index ee0e41c..e9e70aa 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -16,4 +16,6 @@
 #  limitations under the License.
 #
 
+systemProp.file.encoding=UTF-8
+
 org.gradle.jvmargs=-Xms2g -Xmx2g