Bump package dependencies to latest versions compatible with pinned Flutter SDK

[Copilot]

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

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• https://storage.googleapis.com/flutter_infra_release/releases/releases_linux.json
  • Triggering command: /dependabot-proxy /dependabot-proxy (http block)
  • Triggering command: /dependabot-proxy /dependabot-proxy br-7e04398b6088 -j DROP -e ity_-_G2.pem -e /usr/bin/test deb8d41106633e64aa89ca74a54bd29ba7a/log.json s/,/_/g es test -e A.pem deb8d41106633e64aa89ca74a54bd29ba7a /bin/test deb8d41106633e64aa89ca74a54bd29ba7a/init.pid HEAD /home/REDACTED/.co-t test (http block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

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