chore(deps): update dependency ch.sbb.maven.plugins:markdown2html-maven-plugin to v1.6.0

Author: renovate[bot]

pom.xml

@@ -117,7 +117,7 @@
         <nexus-staging-maven-plugin.version>1.7.0</nexus-staging-maven-plugin.version>
         <nexus-staging-maven-plugin.autoReleaseAfterClose>true</nexus-staging-maven-plugin.autoReleaseAfterClose>
 
-        <markdown2html-maven-plugin.version>1.5.0</markdown2html-maven-plugin.version>
+        <markdown2html-maven-plugin.version>1.6.0</markdown2html-maven-plugin.version>
         <markdown2html-maven-plugin.inputFile>${project.basedir}/README.md</markdown2html-maven-plugin.inputFile>
         <markdown2html-maven-plugin.extensionContextAdminHtml>${project.basedir}/src/main/resources/webapp/${maven-jar-plugin.Extension-Context}-admin/html</markdown2html-maven-plugin.extensionContextAdminHtml>
         <markdown2html-maven-plugin.outputFileName>about.html</markdown2html-maven-plugin.outputFileName>