update deps

frontend/pubspec.yaml

@@ -35,9 +35,7 @@ dependencies:
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.
   cupertino_icons: ^1.0.6
-  flutter_map: ^6.1.0
   sliding_up_panel: ^2.0.0+1
-  latlong2: ^0.9.1
   geocoding: ^3.0.0
   geocode: ^1.0.3
   google_maps_flutter: ^2.6.1
@@ -51,7 +49,7 @@ dev_dependencies:
   # activated in the `analysis_options.yaml` file located at the root of your
   # package. See that file for information about deactivating specific lint
   # rules and activating additional ones.
-  flutter_lints: ^3.0.0
+  flutter_lints: ^4.0.0
 
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec