Patch to netty 4.1.86.Final (#1352)

Author: gjmwoods

pom.xml

@@ -34,7 +34,7 @@
     <!-- Please note that when updating this dependency -->
     <!-- (i.e. due to a security vulnerability or bug) that the -->
     <!-- corresponding server dependency also needs updating.-->
-    <netty-bom.version>4.1.85.Final</netty-bom.version>
+    <netty-bom.version>4.1.86.Final</netty-bom.version>
     <!-- Please note that when updating this dependency -->
     <!-- (i.e. due to a security vulnerability or bug) that the -->
     <!-- corresponding server dependency also needs updating.-->