Update maplibre-gl version requirement to <5.0.0

maplibre-gl v5 causes some errors:
visgl#2460

Indicate in package.json that react-map-gl is not yet compatible
with maplibre-gl v5.

package.json

@@ -55,7 +55,7 @@
   },
   "peerDependencies": {
     "mapbox-gl": ">=1.13.0",
-    "maplibre-gl": ">=1.13.0",
+    "maplibre-gl": ">=1.13.0 <5.0.0",
     "react": ">=16.3.0",
     "react-dom": ">=16.3.0"
   },