refactor: upgrade graphql-tag from 2.12.5 to 2.12.6 (parse-community#7726)

Author: snyk-bot

package-lock.json

@@ -36,7 +36,7 @@
     "graphql": "15.7.0",
     "graphql-list-fields": "2.0.2",
     "graphql-relay": "0.7.0",
-    "graphql-tag": "2.12.5",
+    "graphql-tag": "2.12.6",
     "graphql-upload": "11.0.0",
     "intersect": "1.0.1",
     "jsonwebtoken": "8.5.1",