bump version

Author: stephmarie17

snooty.toml

@@ -42,7 +42,7 @@ php-library = "MongoDB PHP Library"
 php-library = "MongoDB PHP Library"
 version = "1.21"
 source-gh-branch = "v1.x"
-full-version = "{+version+}.0"
+full-version = "{+version+}.1"
 extension-short = "PHP extension"
 mdb-server = "MongoDB Server"
 stable-api = "Stable API"