Update dependency coder/code-server to v4.6.0

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
coder/code-server	minor	4.5.2 -> 4.6.0

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Release Notes

coder/code-server

### [`v4.6.0`](https://togithub.com/coder/code-server/blob/HEAD/CHANGELOG.md#​460-httpsgithubcomcodercode-serverreleasestagv460---2022-08-17) [Compare Source](https://togithub.com/coder/code-server/compare/v4.5.2...v4.6.0) Code v1.70.1 ##### Changed - Updated Code to 1.70.1. ##### Added - Added a heartbeat to sockets. This should prevent them from getting closed by reverse proxy timeouts when idle like NGINX's default 60-second timeout. ##### Fixed - Fixed logout option appearing even when authentication is disabled.

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