bump canvas 2.11.0

Author: archmoj

package-lock.json

@@ -128,7 +128,7 @@
     "babel-loader": "^9.0.0",
     "browserify-transform-tools": "^1.7.0",
     "bubleify": "^2.0.0",
-    "canvas": "^2.10.1",
+    "canvas": "^2.11.0",
     "check-node-version": "^4.2.1",
     "chttps": "^1.0.6",
     "deep-equal": "^2.0.5",