Upgrade less to 3.8.1 (from 3.7.1)

Author: bdukes

package.json

@@ -51,7 +51,7 @@
     "knockout-postbox": "0.6.0",
     "knockout-sortable": "1.1.0",
     "knockout.validation": "2.0.3",
-    "less": "3.7.1",
+    "less": "3.8.1",
     "lie": "3.3.0",
     "lightbox2": "2.10.0",
     "moment": "2.22.2",

yarn.lock

@@ -724,6 +724,11 @@ clone@^2.1.1:
   resolved "https://registry.yarnpkg.com/clone/-/clone-2.1.1.tgz#d217d1e961118e3ac9a4b8bba3285553bf647cdb"
   integrity sha1-0hfR6WERjjrJpLi7oyhVU79kfNs=
 
+clone@^2.1.2:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/clone/-/clone-2.1.2.tgz#1b7f4b9f591f1e8f83670401600345a02887435f"
+  integrity sha1-G39Ln1kfHo+DZwQBYANFoCiHQ18=
+
 cloneable-readable@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/cloneable-readable/-/cloneable-readable-1.0.0.tgz#a6290d413f217a61232f95e458ff38418cfb0117"
@@ -2958,10 +2963,12 @@ latest-version@^3.0.0:
   dependencies:
     package-json "^4.0.0"
 
-less@3.7.1:
-  version "3.7.1"
-  resolved "https://registry.yarnpkg.com/less/-/less-3.7.1.tgz#192e9dcef456ba3181a4e8d78a200f72a75e5c30"
-  integrity sha512-Cmf5XJlzNklkBC8eAa+Ef16AHUBAkApHNAw3x9Vmn84h2BvGrri5Id7kf6H1n6SN74Fc0WdHIRPlFMxsl0eJkA==
+less@3.8.1:
+  version "3.8.1"
+  resolved "https://registry.yarnpkg.com/less/-/less-3.8.1.tgz#f31758598ef5a1930dd4caefa9e4340641e71e1d"
+  integrity sha512-8HFGuWmL3FhQR0aH89escFNBQH/nEiYPP2ltDFdQw2chE28Yx2E3lhAIq9Y2saYwLSwa699s4dBVEfCY8Drf7Q==
+  dependencies:
+    clone "^2.1.2"
   optionalDependencies:
     errno "^0.1.1"
     graceful-fs "^4.1.2"