chore(deps): update dependency parcel-bundler to ^1.12.3 (#37)

Author: renovate[bot]

package.json

@@ -116,7 +116,7 @@
     "mkdirp": "^0.5.1",
     "mocha": "^6.1.4",
     "nyc": "^13.3.0",
-    "parcel-bundler": "^1.11.0",
+    "parcel-bundler": "^1.12.3",
     "prettier": "^1.18.2",
     "sinon": "^7.2.5",
     "source-map-support": "^0.5.9",