[WIP] Remove all logic around chacha and caching http client

[Copilot]

Thanks for assigning this issue to me. I'm starting to work on it and will keep this PR's description up to date as I form a plan and make progress.

Original prompt

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This section details on the original issue you should resolve

<issue_title>Remove Cacha</issue_title>
<issue_description>Let's remove all logic around chacha and potentially caching http client. Also let's test GitHub Coding Agent if it can handle it inside of an action powered by Cirrus Runners.</issue_description>

<agent_instructions>Make sure all tests are passing.</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes Remove Cacha #967

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[fkorotkov]

@copilot Try again

[fkorotkov]

Closing while working on support for coding agents via Cirrus Runners