build: upgrade to angular v12

src/app/modules/map/map.provider.ts

@@ -24,7 +24,6 @@ import {Point, Polygon} from 'geojson';
 import {divIcon, geoJSON, icon, LatLng, Map, marker, Marker} from 'leaflet';
 import {DataProvider} from '../data/data.provider';
 import {MapPosition, PositionService} from './position.service';
-import Timeout = NodeJS.Timeout;
 
 /**
  * Provides methods for presenting the map
@@ -91,7 +90,7 @@ export class MapProvider {
   static invalidateWhenRendered = (
     map: Map,
     element: ElementRef,
-    interval: Timeout,
+    interval: number,
   ) => {
     if (element.nativeElement.offsetWidth === 0) {
       return;