Update dependency org.codehaus.mojo:versions-maven-plugin to v2.8.1

Author: renovate-bot

pom.xml

@@ -52,7 +52,7 @@
         <javadoc-plugin.version>3.2.0</javadoc-plugin.version>
         <nexus-staging-plugin.version>1.6.8</nexus-staging-plugin.version>
         <formatter-maven-plugin.version>2.13.0</formatter-maven-plugin.version>
-        <versions-maven-plugin.version>2.2</versions-maven-plugin.version>
+        <versions-maven-plugin.version>2.8.1</versions-maven-plugin.version>
         <gpg-plugin.version>1.6</gpg-plugin.version>
         <rootDir>${project.basedir}</rootDir>
     </properties>