[proxy-agent] Use `HttpsProxyAgent` for WebSocket requests

[TooTallNate]

Fixes #176.

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Latest commit: eb28b96942b09ba9c701b9b4ea5ad96e5ee2400a

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

| Name | Type | | ----------- | ----- | | proxy-agent | Patch |

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Name	Status	Preview	Updated (UTC)
proxy-agents	✅ Ready (Inspect)	Visit Preview	May 25, 2023 0:08am