[kotlin] Fix a leak in the ApiClient

[gosusnp]

This should address #18996.

We tracked down a memory leak from the generated api client in kotlin.
The okhttp3.Response is closeable and isn't closed. This commit shows the fix we did on in Airbyte that addressed the leak.

The fix I am proposing here is to wrap the usage of the okhttp3.Response in a .use {} block.

PR checklist

• Read the contribution guidelines.
• Pull Request title clearly describes the work in the pull request and Pull Request description provides details about how to validate the work. Missing information here may result in delayed response from the community.
• Run the following to build the project and update samples:

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  ./bin/generate-samples.sh ./bin/configs/*.yaml
  ./bin/utils/export_docs_generators.sh
  

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  Commit all changed files.
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[gosusnp]

Dear TC members @jimschubert (2017/09), @dr4ke616 (2018/08) @karismann (2019/03) @Zomzog (2019/04) @andrewemery (2019/10) @4brunu (2019/11) @yutaka0m (2020/03) @stefankoppier (2022/06), please take a look when you get a chance.

[wing328]

thanks for the fix.

let's give it a try