Update dependency RxSwift to ~> 6.9.0

[renovate]

This PR contains the following updates:

Package	Update	Change
RxSwift	minor	~> 6.7.0 → ~> 6.9.0

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Configuration

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

🚦 Automerge: Enabled.

♻ 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.

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

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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: sample/iosApp/Podfile.lock

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.68%. Comparing base (0e4a195) to head (5a241f5).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #426      +/-   ##
==========================================
- Coverage   78.92%   78.68%   -0.25%     
==========================================
  Files          46       46              
  Lines         522      502      -20     
  Branches       56       56              
==========================================
- Hits          412      395      -17     
+ Misses         95       92       -3     
  Partials       15       15              

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