build(deps): bump less-loader from 7.3.0 to 8.1.1

Bumps [less-loader](https://github.com/webpack-contrib/less-loader) from 7.3.0 to 8.1.1.
- [Release notes](https://github.com/webpack-contrib/less-loader/releases)
- [Changelog](https://github.com/webpack-contrib/less-loader/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/less-loader/compare/v7.3.0...v8.1.1)

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

package.json

@@ -15,7 +15,7 @@
         "core-js": "^3.11.0",
         "css-loader": "^5.2.4",
         "less": "3.12.2",
-        "less-loader": "^7.3.0",
+        "less-loader": "^8.1.1",
         "register-service-worker": "^1.7.1",
         "shaka-player": "3.0.10",
         "uikit": "3.6.20",

yarn.lock

@@ -5397,14 +5397,12 @@ launch-editor@^2.2.1:
     chalk "^2.3.0"
     shell-quote "^1.6.1"
 
-less-loader@^7.3.0:
-  version "7.3.0"
-  resolved "https://registry.yarnpkg.com/less-loader/-/less-loader-7.3.0.tgz#f9d6d36d18739d642067a05fb5bd70c8c61317e5"
-  integrity sha512-Mi8915g7NMaLlgi77mgTTQvK022xKRQBIVDSyfl3ErTuBhmZBQab0mjeJjNNqGbdR+qrfTleKXqbGI4uEFavxg==
+less-loader@^8.1.1:
+  version "8.1.1"
+  resolved "https://registry.yarnpkg.com/less-loader/-/less-loader-8.1.1.tgz#ababe912580457ad00a4318146aac5b53e023f42"
+  integrity sha512-K93jJU7fi3n6rxVvzp8Cb88Uy9tcQKfHlkoezHwKILXhlNYiRQl4yowLIkQqmBXOH/5I8yoKiYeIf781HGkW9g==
   dependencies:
     klona "^2.0.4"
-    loader-utils "^2.0.0"
-    schema-utils "^3.0.0"
 
 less@3.12.2:
   version "3.12.2"