Bump flutter_bloc from 8.1.1 to 8.1.2

[dependabot[bot]]

Bumps flutter_bloc from 8.1.1 to 8.1.2.

Release notes

Sourced from flutter_bloc's releases.

flutter_bloc-v8.1.2

• chore: add screenshots to pubspec.yaml (#3717)
• chore(deps): upgrade to bloc ^8.1.1 (#3716)
• chore: update example to Dart 2.19 (#3715)
• refactor: BlocObserver instances to use const constructors (#3713)
• refactor: remove unnecessary single child widget mixins (#3675)
• refactor: upgrade to Flutter 3.7 (#3699)
  • remove deprecated invariant_booleans lint rule

Commits

• 060fae5 chore(flutter_bloc): v8.1.2 (#3718)
• 9610bfd chore(flutter_bloc): add screenshots to pubspec.yaml (#3717)
• 0fbb9e1 feat(flutter_bloc): upgrade to bloc ^8.1.1 (#3716)
• 1ffb815 chore(flutter_bloc): update example to Dart 2.19 (#3715)
• 093f13d feat(hydrated_bloc): add storage.close (#3705)
• 2577838 refactor: BlocObserver instances to use const constructors (#3713)
• c4500b6 chore(bloc_concurrency): v0.2.1 (#3712)
• 648b337 chore(bloc_concurrency): add screenshots to pubspec.yaml (#3711)
• f285985 chore(bloc_concurrency): upgrade to mocktail v0.3.0 (#3710)
• 3b7dc41 chore(bloc): v8.1.1 (#3709)
• Additional commits viewable in compare view

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