Update dependency flutter_bloc to v9

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
flutter_bloc (source)	dependencies	major	^8.1.3 -> ^9.0.0

---

Release Notes

felangel/bloc (flutter_bloc)

v9.0.0

Compare Source

• fix: ensure widget is mounted before invoking listener (#​4237)
• chore(deps): upgrade to bloc ^9.0.0
• chore(deps): bump minimum Dart SDK version to 2.14
• chore: update sponsors
• chore: add funding to pubspec.yaml (#​4200)

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.

[renovate]

⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
• you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: example/pubspec.lock

Command failed: flutter pub upgrade flutter_bloc
Because flutter_bloc >=9.0.0 depends on bloc ^9.0.0 and bloc_test ^9.1.1 depends on bloc ^8.1.1, flutter_bloc >=9.0.0 is incompatible with bloc_test ^9.1.1.
So, because news_app depends on both flutter_bloc ^9.0.0 and bloc_test ^9.1.5, version solving failed.


You can try the following suggestion to make the pubspec resolve:
* Try upgrading your constraint on bloc_test: flutter pub add dev:bloc_test:^10.0.0
Failed to update packages.