[Java] Upgrade to JMH 1.23.

Author: mjpt777

build.gradle

@@ -33,7 +33,7 @@ def checkstyleVersion = '8.28'
 def hamcrestVersion = '2.2'
 def mockitoVersion = '3.2.4'
 def junitVersion = '5.6.0'
-def jmhVersion = '1.22'
+def jmhVersion = '1.23'
 def agronaVersion = '1.3.0'
 
 def sbeGroup = 'uk.co.real-logic'