Support+test negative globs

`action-validator` will now fail if a negative glob doesn't match any file paths in the repository.
Thanks to Kurtis Rainbolt-Greene (@krainboltgreene) for the initial implementation.

Loosen the requirements on runs-on

GitHub have finally admitted defeat in their attempts to keep any sort of structure to the `runs-on` directive, so we're following suit.
Thanks to Victor Sollerhed (@MPV) for the PR.

Updated schemas

Nothing big for this release, just an updated version of the schemas for workflows and actions that we use to validate whether the document is well-formed.

Binary releases for the correct architecture!

It turns out that if you don't tell Rust to build for a particular target, it... doesn't build for that target.
That meant that all those arm64 binaries we were building were actually x86_64 binaries.

Well now, hopefully, they're not.

Only set Cargo.toml version when building a release

Cargo does not deal well with a version string of 'refs/heads/main', strangely enough.

Executable executables are good

This release is intended to fix a deficiency in the `pre-commit` support, so that the script referred to by the `.pre-commit-hooks.yaml` file is actually executable.

Remove wee_alloc from WASM builds

Turns out that `wee_alloc` is deprecated (or at least unsupported, per #33), and so it's better if we don't offer it as an option for WASM builds.
Apologies to the many, many people who no doubt have started using the WASM builds with `wee_alloc` already.  😁
Thanks to Ben Heidemann (@bcheidemann) for the PR (#37).

This release is also an attempt to provide something for `pre-commit` to grab a hold of, per #35.

wasm builds, multiple filenames, and binaries that support older distros

Three nice features in this release:

1. The pre-built binaries now run on Linux distros that aren't at the bleeding edge of glibc, by linking against musl rather than glibc itself.
   Thanks to Matthieu Bizien (@MatthieuBizien) for the PR (#30).

2. The CLI now accepts multiple files in one invocation.
   Thanks again to Matthieu Bizien (@MatthieuBizien) for the PR (#31).

3. NPM packages containing a WASM build of action-validator, both an embeddable library and a CLI, are now available under the `@action-validator` NPM org.
   This support is a bit incomplete and I wouldn't go relying on it for critical purposes just yet, but having it in the tree is a good start towards to making it stable and full-featured.
   Great thanks to Ben Heidemann (@bcheidemann) for the fairly hefty PR (#26) and sticking to the roundabout of getting it to this point.
   Look for future improvements in this area.

The features, keep rolling, along

The flagship of this release is a great new feature from Simon Herbert (@simonherbert), which makes sure that dependencies between jobs in a workflow are valid.

Other improvements:

* Added examples of how to use action-validator in a pre-commit hook and a GitHub workflow, thanks to Mathew Fleisch (@mathewfleisch).
* Fixes for asdf installs on macOS.
* Provide a `--version` option.
* All the various installation methods are now documented in the README.

Picky software is picky!

This release only modifies the licence identifier in the `Cargo.toml` file, so that upload to crates.io will work.