chore: bump rws version to 2.2.0

Author: axelpey

package.xml

@@ -2,7 +2,7 @@
 <?xml-model href="http://download.ros.org/schema/package_format3.xsd" schematypens="http://www.w3.org/2001/XMLSchema"?>
 <package format="3">
   <name>rws</name>
-  <version>2.1.0</version>
+  <version>2.2.0</version>
   <description>ROSbridge WebSocket Server</description>
   <maintainer email="karmanyaah.git@malhotra.cc">Karmanyaah Malhotra</maintainer>
   <license>Apache License 2.0</license>