cask/cmd/update: output message consistency

Handle casks in commands more consistently.

- Ensure the usage documentation always mentions casks when appropriate
- Use --formulae or --casks consistently
- Provide --formulae and --casks switches to upgrade
- Mark more switches as conflicting

bump-formula-pr: fix check_all_pull_requests

Deprecate global `Homebrew.args`.

Fix issue where the cask_opts env variable was not respected when running upgrade, reinstall, uninstall

license: permit no license for non-core taps, add exempted license groups

Co-authored-by: Mike McQuaid <mike@mikemcquaid.com>

style: clarify GitHub .git error message

style: autocorrect readthedocs and GitHub .git homepages

workflows/tests: tweak step naming.

This should make it a bit more obvious what is being tested each time.

The homebrew-core/linuxbrew-core style step actually runs the same
command but, as far as I can tell, there's no way of altering the string
that's output as the `name` based on the OS.

extend/pathname: use absolute path to java in write_jar_script

Remove unused `BottlePublisher` class.

rubocop: adjust RuboCop metrics checks.

We want to allow this class to grow larger still while still enforcing
this on other classes.

tap-new: update GitHub Actions.

This should be using the split options for a better user experience
and can use both Linux and macOS now.

license: handle "Public Domain".

Co-authored-by: Jonathan Chang <jchang641@gmail.com>

Allow `:public_domain` to be used as a `license` value and ensure that
it's handled correctly by `brew info`, `brew audit` and `brew install`.

caskroom: Add --caskroom to match --cellar

data/spdx.json: update to v3.10

docs: add reference to update-python-resources

docs: add license information

update-python-resources: add blocklist