Remove OpenSSL Requirement

[mccormickt]

Description

The addition of the reqwest dependency in #1000 brings in openssl / openssl-sys dependencies with its default features. It would be great if we could modify this dependency to disable default features, utilize the rusttls-tls feature instead of default-tls, and enable the other required default features.

To Reproduce

Please outline the steps to replicate the bug, and if possible, provide a comprehensive code example consisting of both main.rs and Cargo.toml files. A complete and functional code snippet would be highly appreciated.

Expected Behavior

No dependencies on the host's openssl installation.

Environment:

Additional Context

Building loco into minimal container images or the like works best with just rustls and not having to install openssl.

Also, cargo-deny's deny.toml could be used in the future to explicitly audit for openssl dependencies.
deny = [{ name = "openssl" }, { name = "openssl-sys" }]

[jondot]

thanks! yes, happy to accept a PR for this