refactor(ci): migrate from abandoned actions-rs/*

[gustavovalverde]

Motivation

All Rust related repositories at actions-rs/* are no longer being maintained

Fixes: #6048

Solution

• Do not depend on external actions if we have a way to do it manually with little verbosity
• Setup Rust and Cargo using their official documentation https://doc.rust-lang.org/cargo/getting-started/installation.html
• Install Toolchains, Components and Profiles with manual instructions: https://rust-lang.github.io/rustup/concepts/toolchains.html

Review

Anyone from @ZcashFoundation/devops-reviewers

Reviewer Checklist

• Will the PR name make sense to users?
  • Does it need extra CHANGELOG info? (new features, breaking changes, large changes)
• Are the PR labels correct?
• Does the code do what the ticket and PR says?
  • Does it change concurrent code, unsafe code, or consensus rules?
• How do you know it works? Does it have tests?

[codecov]

Codecov Report

Merging #6628 (e1191d3) into main (6016c9d) will increase coverage by 0.21%.
The diff coverage is 88.57%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6628      +/-   ##
==========================================
+ Coverage   77.92%   78.13%   +0.21%     
==========================================
  Files         309      309              
  Lines       40653    40664      +11     
==========================================
+ Hits        31678    31772      +94     
+ Misses       8975     8892      -83     

[teor2345]

I think removing the clippy annotations is a blocker. Can we please keep them?

[teor2345]

What's the deadline for this? Have GitHub announced a final date when support for these actions will end?

[gustavovalverde]

I think removing the clippy annotations is a blocker. Can we please keep them?

I kept it, as this is a blocker and we have time to find a better replacement.

What's the deadline for this? Have GitHub announced a final date when support for these actions will end?

September 27th

[teor2345]

Looks good.

I reduced the priority to "medium", because the deadline is still 4 months away.

[teor2345]

@gustavovalverde is this PR causing internal errors in GitHub actions:

GitHub Actions has encountered an internal error when running your job.

https://github.com/ZcashFoundation/zebra/actions/runs/4940550408?pr=6657

Or is that happening because of the current GitHub infrastructure failures:
https://www.githubstatus.com/