Update dependency bl to v2.2.0

Author: renovate-bot

package-lock.json

@@ -56,7 +56,7 @@
     "babel-jest": "23.6.0",
     "babel-plugin-graphql-tag": "1.6.0",
     "babel-plugin-module-resolver": "3.1.1",
-    "bl": "2.1.2",
+    "bl": "2.2.0",
     "eslint": "5.12.0",
     "eslint-config-metalab": "10.0.0",
     "flow-bin": "0.90.0",