Update dependency org.codehaus.mojo:versions-maven-plugin to v2.8.1 (#17)

Co-authored-by: Renovate Bot <[email protected]>

Author: renovate[bot]

pom.xml

@@ -44,7 +44,7 @@
         <source-plugin.version>2.4</source-plugin.version>
         <javadoc-plugin.version>3.2.0</javadoc-plugin.version>
         <gpg-plugin.version>1.6</gpg-plugin.version>
-        <versions-plugin.version>2.7</versions-plugin.version>
+        <versions-plugin.version>2.8.1</versions-plugin.version>
         <nexus-staging-plugin.version>1.6.7</nexus-staging-plugin.version>
     </properties>