[chore] Renovate: Update ktor 2.3.8 to v2.3.9

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
io.ktor:ktor-client-mock	2.3.8 -> 2.3.9
io.ktor:ktor-serialization-kotlinx-json	2.3.8 -> 2.3.9
io.ktor:ktor-client-cio	2.3.8 -> 2.3.9

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Release Notes

ktorio/ktor (io.ktor:ktor-client-mock)

### [`v2.3.9`](https://togithub.com/ktorio/ktor/releases/tag/2.3.9) [Compare Source](https://togithub.com/ktorio/ktor/compare/2.3.8...2.3.9) > Published 4 March 2024 ##### Improvements - Allow to set secure cookie even with http scheme ([KTOR-3159](https://youtrack.jetbrains.com/issue/KTOR-3159)) ##### Bugfixes - ContentNegotiation: the plugin appends duplicated MIME type to Accept header ([KTOR-6684](https://youtrack.jetbrains.com/issue/KTOR-6684))

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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 these updates again.

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

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This PR has been generated by Mend Renovate. View repository job log here.

[renovate[bot]]

Branch automerge failure

This PR was configured for branch automerge. However, this is not possible, so it has been raised as a PR instead.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 91.93%. Comparing base (32c5480) to head (7e04062).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #152 +/- ## ======================================= Coverage 91.93% 91.93% ======================================= Files 57 57 Lines 893 893 Branches 117 117 ======================================= Hits 821 821 Misses 18 18 Partials 54 54 ```

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