Update SDK version and dependencies in pubspec.yaml

Author: rabi-33

place_tracker/pubspec.yaml

@@ -3,8 +3,10 @@ description: A sample place tracking app.
 resolution: workspace
 publish_to: 'none'
 version: 1.0.1+2
+
 environment:
-  sdk: ">=3.0.0 <4.0.0"
+  sdk: '^3.11.1'
+
 dependencies:
   flutter:
     sdk: flutter
@@ -13,6 +15,7 @@ dependencies:
   go_router: ^12.0.0
   google_maps_webservice: ^0.0.20-nullsafety.5
   uuid: ^4.3.3
+
 dev_dependencies:
   flutter_test:
     sdk: flutter