Bump to 2.7.2

https://stackoverflow.com/questions/36427291/illegalaccesserror-to-guavas-stopwatch-from-org-apache-hadoop-mapreduce-lib-inp

build.gradle

@@ -49,7 +49,7 @@ def jacksonVersion = '2.13.3'
 def pulsarGroup = 'org.apache.pulsar'
 def pulsarVersion = '2.10.3'
 def alpnAgentVersion = '2.0.10'
-def hadoopVersion = '2.6.0'
+def hadoopVersion = '2.7.2'
 
 ext.libraries = [
     alpnAgent: "org.mortbay.jetty.alpn:jetty-alpn-agent:${alpnAgentVersion}",