Merge pull request #349 from rabbitmq/revert-348-dependabot/maven/org.jruby-jruby-complete-9.3.6.0

Revert "Bump jruby-complete from 9.3.4.0 to 9.3.6.0"

Not compatible with AsciiDoctor.

Author: acogoluegnes

pom.xml

@@ -94,7 +94,7 @@
 
     <asciidoctor.maven.plugin.version>2.2.2</asciidoctor.maven.plugin.version>
     <asciidoctorj.version>2.5.4</asciidoctorj.version>
-    <jruby.version>9.3.6.0</jruby.version>
+    <jruby.version>9.3.4.0</jruby.version>
     <!-- For GraalVM native image -->
     <slf4j.version>1.7.36</slf4j.version>
     <graal-sdk.version>22.1.0.1</graal-sdk.version>