chore(deps): update dependency google-auth to v1.21.2 [(#4684)](#4684)

renovate-bot · busunkim96 · commit ceee0ad05074 · 2020-09-29T10:46:26.000-06:00
diff --git a/language/snippets/api/requirements.txt b/language/snippets/api/requirements.txt
@@ -1,3 +1,3 @@
 google-api-python-client==1.11.0
-google-auth==1.21.1
+google-auth==1.21.2
 google-auth-httplib2==0.0.4
