CI: update actions to run on Node 16

[miles170]

Closes #4154.

1. remove use of actions-rs/cargo

actions-rs/cargo is currently inactive and has an issue like actions-rs/cargo#216

2. remove use of actions-rs/toolchain

actions-rs/toolchain is currently inactive and has an issue like actions-rs/toolchain#219

3. Swatinem/rust-cache should happen after the toolchain. See https://github.com/Swatinem/rust-cache
4. fix rust-cache cache conflict. See Post Run Swatinem/rust-cache@v2
5. replace actions-rs/install with cargo install, since with Swatinem/rust-cache the binary can be cached

actions-rs/install is currently inactive and has an issue like actions-rs/toolchain#219

[github-actions]

GNU testsuite comparison:

Congrats! The gnu test tests/misc/tee is no longer failing!

[github-actions]

GNU testsuite comparison:

Congrats! The gnu test tests/misc/tee is no longer failing!

[github-actions]

GNU testsuite comparison:

Congrats! The gnu test tests/misc/tee is no longer failing!

[miles170]

Check CI here:

1. CICD
2. GnuTests

[github-actions]

GNU testsuite comparison:

GNU test failed: tests/rm/ext3-perf. tests/rm/ext3-perf is passing on 'main'. Maybe you have to rebase?
GNU test failed: tests/tail-2/inotify-dir-recreate. tests/tail-2/inotify-dir-recreate is passing on 'main'. Maybe you have to rebase?

[github-actions]

GNU testsuite comparison:

GNU test failed: tests/misc/timeout. tests/misc/timeout is passing on 'main'. Maybe you have to rebase?

[sylvestre]

thanks!