Merge pull request #378 from rabbitmq/dependabot/maven/org.codehaus.gmavenplus-gmavenplus-plugin-3.0.0

Bump gmavenplus-plugin from 2.1.0 to 3.0.0

Author: acogoluegnes

pom.xml

@@ -56,7 +56,7 @@
     <maven.jar.plugin.version>3.3.0</maven.jar.plugin.version>
     <maven.release.plugin.version>3.0.0</maven.release.plugin.version>
     <checksum.maven.plugin.version>1.11</checksum.maven.plugin.version>
-    <gmavenplus-plugin.version>2.1.0</gmavenplus-plugin.version>
+    <gmavenplus-plugin.version>3.0.0</gmavenplus-plugin.version>
     <maven.packagecloud.wagon.version>0.0.6</maven.packagecloud.wagon.version>
     <nexus-staging-maven-plugin.version>1.6.13</nexus-staging-maven-plugin.version>
     <gpg.keyname>6026DFCA</gpg.keyname>