chore: update file-url dependency to ^3.0.0 (#72)

diff --git a/package.json b/package.json
index f6552bc..b95de33 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "eslint-plugin-node": "^8.0.1",
     "eslint-plugin-promise": "^4.0.1",
     "eslint-plugin-standard": "^4.0.0",
-    "file-url": "^2.0.2",
+    "file-url": "^3.0.0",
     "jasmine": "^3.5.0",
     "nyc": "^14.1.1",
     "rewire": "^4.0.1"