chore(deps): bump the shorebird_code_push-deps group (#128)

Bumps the shorebird_code_push-deps group in /shorebird_code_push with 2 updates: [ffigen](https://github.com/dart-lang/native/tree/main/pkgs) and [mocktail](https://github.com/felangel/mocktail).


Updates `ffigen` from 8.0.2 to 11.0.0
- [Release notes](https://github.com/dart-lang/native/releases)
- [Commits](https://github.com/dart-lang/native/commits/ffigen-v11.0.0/pkgs)

Updates `mocktail` from 0.3.0 to 1.0.3
- [Release notes](https://github.com/felangel/mocktail/releases)
- [Commits](https://github.com/felangel/mocktail/compare/mocktail-v0.3.0...mocktail-v1.0.3)

---
updated-dependencies:
- dependency-name: ffigen
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: shorebird_code_push-deps
- dependency-name: mocktail
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: shorebird_code_push-deps
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Bryan Oltman <bryanoltman@gmail.com>

shorebird_code_push/pubspec.yaml

@@ -12,8 +12,8 @@ dependencies:
   meta: ^1.9.1
 
 dev_dependencies:
-  ffigen: ^8.0.2
-  mocktail: ^0.3.0
+  ffigen: ">=8.0.2 <12.0.0"
+  mocktail: ">=0.3.0 <2.0.0"
   test: ^1.19.2
   very_good_analysis: ^5.0.0