Replace curl package into ureq

[HoKim98]

When installing wasm-bindgen-cli in Alpine Linux, it's forced to install openssl-sys package.

But I found that the openssl dependency is only subject to curl package, which is used for headless operations.

So I think it's ok to adopt rustls instead, not installing the native openssl binaries by option.

And I replaced the old curl package into ureq, using rustls by default.

Therefore, this PR is a rustls support for wasm-bindgen-cli.

[hamza1311]

This is a good solution in the meantime but, ultimately we should just replace curl with ureq.

I'm afraid that removing the features in the future could end being a breaking change

[daxpedda]

@kerryeon would you be willing to rip out cURL entirely and just switch to ureq?
I would prefer that we fix this now instead of introducing a bunch of crate features that we are going to deprecate anyway.

A note in the changelog would also be appreciated.

[HoKim98]

Ok, let me dig in this migration job and notify it.

[HoKim98]

@hamza1311 @daxpedda Hello, please review when you have time :)

[hamza1311]

Looks good to me. I'll merge this once the CI is finished

[daxpedda]

Thank you, a couple of nits here and there.

[daxpedda]

Small nits.

[HoKim98]

Confirmed!

[daxpedda]

Thank you!