Update dependency graphql-tag to v2.12.4

Author: renovate-bot

package.json

@@ -14,7 +14,7 @@
 	"dependencies": {
 		"bcryptjs": "2.4.3",
 		"graphql": "14.4.2",
-		"graphql-tag": "2.10.1",
+		"graphql-tag": "2.12.4",
 		"graphql-tools": "4.0.5",
 		"graphql-yoga": "1.18.1",
 		"jsonwebtoken": "8.5.1",