Upgrade to wavefront-sdk-java 3.0.4

Closes gh-3636

Author: shakuzen

dependencies.gradle

@@ -25,7 +25,7 @@ def VERSIONS = [
         'com.signalfx.public:signalfx-java:latest.release',
         'com.squareup.okhttp3:okhttp:latest.release',
         'com.tngtech.archunit:archunit-junit5:latest.release',
-        'com.wavefront:wavefront-sdk-java:latest.release',
+        'com.wavefront:wavefront-sdk-java:3.0.+',
         'io.dropwizard.metrics:metrics-core:4.+',
         'io.dropwizard.metrics:metrics-graphite:4.+',
         'io.dropwizard.metrics:metrics-jmx:4.+',