Bump less from 2.7.3 to 3.0.1

Bumps [less](https://github.com/less/less.js) from 2.7.3 to 3.0.1.
- [Release notes](https://github.com/less/less.js/releases)
- [Changelog](https://github.com/less/less.js/blob/master/CHANGELOG.md)
- [Commits](https://github.com/less/less.js/commits)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot-support

package.json

@@ -52,7 +52,7 @@
     "jest": "^21.2.1",
     "jest-vue-preprocessor": "^1.3.1",
     "jsdom": "^11.3.0",
-    "less": "^2.7.3",
+    "less": "^3.0.1",
     "less-loader": "^4.0.5",
     "node-sass": "^4.5.3",
     "pre-commit": "^1.2.2",

yarn.lock

@@ -3794,14 +3794,14 @@ less-loader@^4.0.5:
     loader-utils "^1.1.0"
     pify "^2.3.0"
 
-less@^2.7.3:
-  version "2.7.3"
-  resolved "https://registry.yarnpkg.com/less/-/less-2.7.3.tgz#cc1260f51c900a9ec0d91fb6998139e02507b63b"
+less@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/less/-/less-3.0.1.tgz#ba2fea24a5632ccb8c84230d6043c0bf91855e37"
   optionalDependencies:
     errno "^0.1.1"
     graceful-fs "^4.1.2"
     image-size "~0.5.0"
-    mime "^1.2.11"
+    mime "^1.4.1"
     mkdirp "^0.5.0"
     promise "^7.1.1"
     request "2.81.0"
@@ -4069,10 +4069,14 @@ [email protected]:
   version "1.3.4"
   resolved "https://registry.yarnpkg.com/mime/-/mime-1.3.4.tgz#115f9e3b6b3daf2959983cb38f149a2d40eb5d53"
 
-mime@^1.2.11, mime@^1.3.4:
+mime@^1.3.4:
   version "1.3.6"
   resolved "https://registry.yarnpkg.com/mime/-/mime-1.3.6.tgz#591d84d3653a6b0b4a3b9df8de5aa8108e72e5e0"
 
+mime@^1.4.1:
+  version "1.6.0"
+  resolved "https://registry.yarnpkg.com/mime/-/mime-1.6.0.tgz#32cd9e5c64553bd58d19a568af452acff04981b1"
+
 mimic-fn@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-1.1.0.tgz#e667783d92e89dbd342818b5230b9d62a672ad18"