Bump mapv from 2.0.43 to 2.0.56

Bumps [mapv](https://github.com/huiyan-fe/mapv) from 2.0.43 to 2.0.56.
- [Release notes](https://github.com/huiyan-fe/mapv/releases)
- [Commits](https://github.com/huiyan-fe/mapv/commits)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Author: dependabot-preview[bot]

package.json

@@ -126,7 +126,7 @@
     "lodash.remove": "^4.7.0",
     "lodash.topairs": "4.3.0",
     "mapbox-gl": "1.6.1",
-    "mapv": "2.0.43",
+    "mapv": "2.0.56",
     "ol": "6.1.1",
     "pbf": "3.2.1",
     "proj4": "2.6.0",