More FG build classpath workarounds

Though this one seems to have a different cause from the previous
one.

build.gradle

@@ -5,6 +5,7 @@ buildscript {
 
     dependencies {
         classpath 'com.google.guava:guava:27.1-jre'
+        classpath 'org.apache.maven:maven-artifact:3.6.1'
     }
 }