chore(deps): update dependency google-cloud-kms to v2.3.0 (#121)

Author: renovate-bot

kms/snippets/requirements.txt

@@ -1,3 +1,3 @@
-google-cloud-kms==2.2.0
+google-cloud-kms==2.3.0
 cryptography==3.4.7
 crcmod==1.7