Bump webpack-node-externals from 1.7.2 to 3.0.0

Bumps [webpack-node-externals](https://github.com/liady/webpack-node-externals) from 1.7.2 to 3.0.0.
- [Release notes](https://github.com/liady/webpack-node-externals/releases)
- [Changelog](https://github.com/liady/webpack-node-externals/blob/master/CHANGELOG.md)
- [Commits](liady/webpack-node-externals@v1.7.2...v3.0.0)

---
updated-dependencies:
- dependency-name: webpack-node-externals
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -100,7 +100,7 @@
     "webdav": "4.10.0",
     "webpack": "^4.30.0",
     "webpack-cli": "^4.9.2",
-    "webpack-node-externals": "^1.7.2",
+    "webpack-node-externals": "^3.0.0",
     "xml-js": "^1.6.11",
     "xml2js": "^0.4.23"
   },