DOCSP-51932: v2.21.2 patch release (#163)

(cherry picked from commit 5f8db58)

Author: norareidy

snooty.toml

@@ -23,7 +23,7 @@ mongo-enterprise = "MongoDB Enterprise Edition"
 docs-branch = "master"
 # always set this to the driver branch (i.e. 1.7 1.8, etc.)
 version-number = "2.21"
-patch-version-number = "{+version-number+}.1"
+patch-version-number = "{+version-number+}.2"
 version = "v{+version-number+}"
 stable-api = "Stable API"
 api-root = "https://www.mongodb.com/docs/ruby-driver/current/api/"