chore(coverage): bump to 80% (#847)

Author: avivkeller

codecov.yml

@@ -4,6 +4,4 @@ coverage:
     patch: false
     project:
       default:
-        # TODO(@avivkeller): Once our coverage > 80%,
-        # increase this to 80%, and increase on increments
-        target: 70%
+        target: 80%