⬆️ Bump less from 3.13.1 to 4.1.1

Bumps [less](https://github.com/less/less.js) from 3.13.1 to 4.1.1.
- [Release notes](https://github.com/less/less.js/releases)
- [Changelog](https://github.com/less/less.js/blob/master/CHANGELOG.md)
- [Commits](less/less.js@v3.13.1...v4.1.1)

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

Author: dependabot-preview[bot]

package.json

@@ -61,7 +61,7 @@
     "father-build": "^1.18.6",
     "gh-pages": "^3.1.0",
     "husky": "^4.2.5",
-    "less": "^3.10.3",
+    "less": "^4.1.1",
     "np": "^7.0.0",
     "prettier": "^2.0.5",
     "pretty-quick": "^3.0.0",