Merge pull request #770 from rabbitmq/dependabot/maven/main/org.codehaus.mojo-keytool-maven-plugin-1.6

Bump keytool-maven-plugin from 1.5 to 1.6

Author: acogoluegnes

pom.xml

@@ -73,7 +73,7 @@
     <maven.source.plugin.version>3.2.1</maven.source.plugin.version>
     <groovy.maven.plugin.version>2.1.1</groovy.maven.plugin.version>
     <groovy.all.version>2.4.21</groovy.all.version>
-    <keytool.maven.plugin.version>1.5</keytool.maven.plugin.version>
+    <keytool.maven.plugin.version>1.6</keytool.maven.plugin.version>
     <build.helper.maven-plugin.version>3.3.0</build.helper.maven-plugin.version>
     <maven.compiler.plugin.version>3.10.1</maven.compiler.plugin.version>
     <maven.surefire.plugin.version>2.22.2</maven.surefire.plugin.version>