fix(curl): revert to use openssl on macos [INS-3445]

[notjaywu]

We changed to use SecureTransport in the last release to access the keychain on macOS.

But it causes some regressions:

1. #6948
2. #6946

Using SecureTransport allows us to support Mac Keychain but we lose support for TLS 1.3 and client certificates cannot be directly uploaded into the app.

Using other solutions like OpenSSL, allows us to support TLS 1.3 and client certificates in the app, but we lose access to the MacOS Keychain.

But MacOS Keychain certificates could be imported into Insomnia if we supported OpenSSL (you would have them in two places, Insomnia + Keychain).

So the best solution is to support OpenSSL, and ask the user to re-import the client certificates they want to use inside Insomnia. We lose a native integration with Keychain, which will cause poor UX, but will not cause a loss of capability. Whereas supporting SecureTransport has better UX, but at a greater cost of loss of capability.

[codecov-commenter]

Codecov Report

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Additional details and impacted files

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  Hits               ?      879           
  Misses             ?       41           
  Partials           ?       20           

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