* fix(generate-workflows): Do not use actions-rs
[actions-rs/toolchain](https://github.com/actions-rs/toolchain) is unsupported:
- Has not recieved updates since November 2020 (~2.5 years)
- It uses Node.js 12 and GitHub will stop supporting it Summer this year(?) see
this [article](https://github.blog/changelog/2022-09-22-github-actions-all-actions-will-begin-running-on-node16-instead-of-node12/).
[dtolnay/rust-toolchain](https://github.com/dtolnay/rust-toolchain) is
actively supported and its mostly a 1-1 replacement, the differences are:
- Uses the minimal profile always, so no need to specify it.
- There is no need to override the toolchain.
I also removed some things:
- None of the generated actions use `rustfmt` so I removed the component
- The toolchain is always stable, so I specified it in the action itself
instead of in the action parameters.
* ci: Regenerate workflows
* fix: Remove ALLOW_UNSECURE_COMMANDS from action
* fix(CentOS7): Manually install rustup as CentOS7 uses a very old curl
* fix: Restart shell so that the rustup command is available
* feat: Add exeption to the CentOS workflow to download rustup
* fix: Remove actions-rs/toolchain from remaining workflows
* fix: Address review comment
checkout seems to be failing for ubuntu 20 recently:
```
Deleting the contents of '/__w/wezterm/wezterm'
Initializing the repository
/usr/bin/git init /__w/wezterm/wezterm
Initialized empty Git repository in /__w/wezterm/wezterm/.git/
/usr/bin/git remote add origin https://github.com/wez/wezterm
Error: fatal: unsafe repository ('/__w/wezterm/wezterm' is owned by someone else)
To add an exception for this directory, call:
git config --global --add safe.directory /__w/wezterm/wezterm
Error: The process '/usr/bin/git' failed with exit code 128
```
Try reverting this as a workaround.
`gh` is pre-installed in native runners only; when we build in a
container, we need to install it for ourselves.
This commit drops support for building on centos7 as it is a PITA
to get this working there.
