fix: upgrade ol from 6.9.0 to 6.13.0

Snyk has created this PR to upgrade ol from 6.9.0 to 6.13.0.

See this package in npm:
https://www.npmjs.com/package/ol

See this project in Snyk:
https://app.snyk.io/org/ahnan/project/61fe76dc-20a0-4426-a5a5-1699c7d53f2a?utm_source=github&utm_medium=referral&page=upgrade-pr

Author: snyk-bot

package.json

@@ -128,7 +128,7 @@
     "lodash.topairs": "4.3.0",
     "mapbox-gl": "1.13.2",
     "mapv": "2.0.62",
-    "ol": "6.9.0",
+    "ol": "6.13.0",
     "pbf": "3.2.1",
     "proj4": "2.7.5",
     "promise-polyfill": "8.2.1",