fix: upgrade less from 3.8.1 to 3.13.1

Snyk has created this PR to upgrade less from 3.8.1 to 3.13.1.

See this package in npm:
less

See this project in Snyk:
https://app.snyk.io/org/konstantin.yaroshovets/project/156051c6-dd3e-4c93-8594-efbad8bfd69d?utm_source=github&utm_medium=referral&page=upgrade-pr

package.json

@@ -80,7 +80,7 @@
     "knockout-mapping": "2.6.0",
     "knockout-sortable": "1.2.2",
     "leaflet": "1.9.3",
-    "less": "3.8.1",
+    "less": "3.13.1",
     "lodash": "4.17.21",
     "lscache": "1.3.2",
     "lz-string": "1.4.4",