chore: Update remap-istanbul to the latest version 🚀 (#452)

Author: greenkeeper[bot]

package-lock.json

@@ -71,7 +71,7 @@
     "mocha": "^5.2.0",
     "prettier": "^1.15.3",
     "prettylint": "^1.0.0",
-    "remap-istanbul": "^0.12.0",
+    "remap-istanbul": "^0.13.0",
     "semantic-release": "^15.12.2",
     "semantic-release-vsce": "^2.1.2",
     "tslint": "^5.11.0",