Upgrade python/google-api-python-client to v1.7.12

Exempt-From-Owner-Approval: upgrade
Test: None
Change-Id: I9e5b41ca7ba9192bfea90a0558fa38f238546ec4
diff --git a/METADATA b/METADATA
index 8762d8d..440c5d9 100644
--- a/METADATA
+++ b/METADATA
@@ -9,10 +9,10 @@
     type: GIT
     value: "https://github.com/google/google-api-python-client"
   }
-  version: "v1.7.11"
+  version: "v1.7.12"
   last_upgrade_date {
-    year: 2019
-    month: 8
-    day: 19
+    year: 2020
+    month: 3
+    day: 11
   }
 }