BUMP v2.2.2

Signed-off-by: mongodb-dbx-release-bot[bot] <167856002+mongodb-dbx-release-bot[bot]@users.noreply.github.com>

Author: mongodb-dbx-release-bot[bot]

version/version.go

@@ -11,4 +11,4 @@
 package version
 
 // Driver is the current version of the driver.
-var Driver = "2.2.1"
+var Driver = "2.2.2"