chore(deps): update dependency source-map-support to v0.5.4

Author: renovate-bot

package-lock.json

@@ -42,7 +42,7 @@
     "mocha": "5.0.4",
     "nyc": "11.6.0",
     "rimraf": "2.6.2",
-    "source-map-support": "0.5.3"
+    "source-map-support": "0.5.4"
   },
   "publishConfig": {
     "access": "public"