Update dependency less-loader to v12

package.json

@@ -19,7 +19,7 @@
       "is-svg": "^5.0.0",
       "jquery": "^3.3.1",
       "less": "4.2.0",
-      "less-loader": "^11.0.0",
+      "less-loader": "^12.0.0",
       "libphonenumber-js": "^1.9.25",
       "mini-css-extract-plugin": "^2.4.3",
       "normalize-url": "^8.0.0",

yarn.lock

@@ -3470,10 +3470,10 @@ launch-editor@^2.6.0:
     picocolors "^1.0.0"
     shell-quote "^1.7.3"
 
-less-loader@^11.0.0:
-  version "11.1.3"
-  resolved "https://registry.yarnpkg.com/less-loader/-/less-loader-11.1.3.tgz#1bb62d6ca9bf00a177c02793b54baac40f9be694"
-  integrity sha512-A5b7O8dH9xpxvkosNrP0dFp2i/dISOJa9WwGF3WJflfqIERE2ybxh1BFDj5CovC2+jCE4M354mk90hN6ziXlVw==
+less-loader@^12.0.0:
+  version "12.1.0"
+  resolved "https://registry.yarnpkg.com/less-loader/-/less-loader-12.1.0.tgz#d13878ed094c0fef87f12bb616c760eb5b366fca"
+  integrity sha512-N/MRZA9iILOW+TQ9xoDptsSPbtBJDWshOj3LNqL+UJAYDhtoraLECiBa93DeLJUfR4m/VE6bWuxaVs40+wBXYw==
 
 [email protected]:
   version "4.2.0"