Upgrade testng to get method names to show up in gradle console when skipping, and in testng html output. (#5653)

Author: dweebo

build.gradle

@@ -54,7 +54,7 @@ def junitVersion = "4.12"
 def reactiveStreamsVersion = "1.0.1"
 def mockitoVersion = "2.1.0"
 def jmhVersion = "1.16"
-def testNgVersion = "6.9.10"
+def testNgVersion = "6.11"
 
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