chore(deps): update dependency google-cloud-kms to v2.8.0 (#188)

Author: renovate-bot

packages/google-cloud-kms/samples/snippets/requirements.txt

@@ -1,3 +1,3 @@
-google-cloud-kms==2.7.0
+google-cloud-kms==2.8.0
 cryptography==35.0.0
 crcmod==1.7