Update dependency file-url to v4

Author: renovate[bot]

package-lock.json

@@ -43,7 +43,7 @@
     "babel-polyfill": "^6.26.0",
     "debug": "^4.1.1",
     "extend": "^3.0.0",
-    "file-url": "^3.0.0",
+    "file-url": "^4.0.0",
     "google-auth-library": "^7.1.2",
     "googleapis": "^78.0.0",
     "highlight.js": "^10.7.3",

package.json

@@ -2570,10 +2570,10 @@ file-entry-cache@^6.0.1:
   dependencies:
     flat-cache "^3.0.4"
 
-file-url@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.npmjs.org/file-url/-/file-url-3.0.0.tgz"
-  integrity sha512-g872QGsHexznxkIAdK8UiZRe7SkE6kvylShU4Nsj8NvfvZag7S0QuQ4IgvPDkk75HxgjIVDwycFTDAgIiO4nDA==
+file-url@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.npmjs.org/file-url/-/file-url-4.0.0.tgz"
+  integrity sha512-vRCdScQ6j3Ku6Kd7W1kZk9c++5SqD6Xz5Jotrjr/nkY714M14RFHy/AAVA2WQvpsqVAVgTbDrYyBpU205F0cLw==
 
 fill-range@^4.0.0:
   version "4.0.0"