fix: upgrade react-leaflet-draw from 0.19.8 to 0.20.6

Snyk has created this PR to upgrade react-leaflet-draw from 0.19.8 to 0.20.6.

See this package in npm:
react-leaflet-draw

See this project in Snyk:
https://app.snyk.io/org/compass/project/d4140809-db5b-42be-953c-20abcf28fbb3?utm_source=github&utm_medium=referral&page=upgrade-pr

Author: snyk-bot

packages/compass-schema/package.json

@@ -96,7 +96,7 @@
     "prop-types": "^15.7.2",
     "react": "^17.0.2",
     "react-leaflet": "^2.4.0",
-    "react-leaflet-draw": "^0.19.0",
+    "react-leaflet-draw": "^0.20.6",
     "react-redux": "^8.1.3",
     "redux": "^4.2.1",
     "redux-thunk": "^2.4.2"