This updates the library and example app dependency constraints to current versions, while keeping compatibility with the repository’s pinned Flutter toolchain. The goal is to modernize dependency resolution without introducing SDK-version drift.

• Dependency constraint refresh (library)

  • Updated direct dependencies in pubspec.yaml to newer compatible releases (e.g. http, file_picker, path_provider, uuid, meta, bloc, mcumgr_flutter, etc.).
  • Upgraded universal_ble to the latest compatible major for the current Flutter baseline.

• Dependency constraint refresh (example app)

  • Updated direct dependencies in example/pubspec.yaml (e.g. cupertino_icons, flutter_svg, file_picker, meta, bloc, provider, mcumgr_flutter).

• SDK compatibility alignment

  • Raised Dart SDK constraints in both root and example pubspecs to >=3.8.0 <4.0.0.
  • Updated root Flutter constraint to >=3.24.0 to match updated package requirements.

Example of the constraint updates:

# pubspec.yaml
environment:
  sdk: '>=3.8.0 <4.0.0'
  flutter: ">=3.24.0"

dependencies:
  http: ^1.6.0
  file_picker: ^11.0.2
  universal_ble: ^1.2.0
  meta: ^1.18.2