While the typing_extensions/pydantic `Literal` bugs are being sorted
out, disable fail-fast so the rest of the CI is available for
development purposes.
* CI: Only run test suite once with thinc-apple-ops for macos python 3.11
* Adjust syntax
* Try alternate syntax
* Try alternate syntax
* Try alternate syntax
Switch PR tests back to paths-ignore but include changes to `.github`
for all PRs rather than trying to figure out complicated
includes+excludes. Changes to `.github` are relatively rare and should
not be a huge burden for the CI.
