Update CHANGES.rst for version 3.9.2

Added changelog entry for Apache Libcloud 3.9.2 regarding SSH support for paramiko 4.

Author: micafer

CHANGES.rst

@@ -1,6 +1,19 @@
 Changelog
 =========
 
+Changes in Apache Libcloud 3.9.2
+--------------------------------
+
+Compute
+~~~~~~~
+
+- [SSH] Support paramiko 4
+
+  RSA key support has been removed as of paramiko 4, so only import it
+  and check if the version number is less than 4.
+  (#2135)
+  [Steve Kowalik - @s-t-e-v-e-n-k]
+
 Changes in Apache Libcloud 3.9.1
 --------------------------------