[geolocator_linux]: Bump flutter_lints in /geolocator_linux/example

Bumps [flutter_lints](https://github.com/flutter/packages/tree/main/packages) from 1.0.4 to 2.0.3.
- [Release notes](https://github.com/flutter/packages/releases)
- [Commits](https://github.com/flutter/packages/commits/flutter_lints-v2.0.3/packages)

---
updated-dependencies:
- dependency-name: flutter_lints
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

geolocator_linux/example/pubspec.yaml

@@ -32,7 +32,7 @@ dependencies:
 dev_dependencies:
   flutter_test:
     sdk: flutter
-  flutter_lints: ^1.0.4
+  flutter_lints: ^2.0.3
 
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec