Also: GitHub Actions already sets it.

build(deps): bump codecov from 0.2.3 to 0.2.5 in /Library/Homebrew

cmd/upgrade: fix cask/formula args (again).

utils: add SPDX module

Fixes https://github.com/Homebrew/brew/issues/8228#issuecomment-670161766

Bumps [codecov](https://github.com/codecov/codecov-ruby) from 0.2.3 to 0.2.5.
- [Release notes](https://github.com/codecov/codecov-ruby/releases)
- [Changelog](https://github.com/codecov/codecov-ruby/blob/master/CHANGELOG.md)
- [Commits](https://github.com/codecov/codecov-ruby/compare/v0.2.3...v0.2.5

)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Fix --formula and --cask flags.

These were all made `--formulae` and `--casks` for consistency but that
doesn't behave as expected because they have special behaviours in
`args`. Instead, use the singular form everywhere.

Fix “wrong number of arguments” error

Cleanup more GitHub Actions usage

This commit fixes an error introduced in 6c964d4a, which would
surface on certain install/reinstall/upgrade failures.

Example:

```
==> Patching
patching file default_out.txt
Hunk #2 FAILED at 11.
1 out of 2 hunks FAILED -- saving rejects to file default_out.txt.rej
Error: wrong number of arguments (given 3, expected 2)
/usr/local/Homebrew/Library/Homebrew/reinstall.rb:77:in `restore_backup'
/usr/local/Homebrew/Library/Homebrew/reinstall.rb:52:in `block in reinstall_formula'
/usr/local/Homebrew/Library/Homebrew/utils.rb:377:in `ignore_interrupts'
/usr/local/Homebrew/Library/Homebrew/reinstall.rb:52:in `rescue in reinstall_formula'
/usr/local/Homebrew/Library/Homebrew/reinstall.rb:10:in `reinstall_formula'
/usr/local/Homebrew/Library/Homebrew/cmd/reinstall.rb:71:in `block in reinstall'
/usr/local/Homebrew/Library/Homebrew/cmd/reinstall.rb:65:in `each'
/usr/local/Homebrew/Library/Homebrew/cmd/reinstall.rb:65:in `reinstall'
/usr/local/Homebrew/Library/Homebrew/brew.rb:112:in `<main>'
```

Remove usages of `Homebrew.args.verbose?` and `Homebrew.args.debug?`.

Increase consistency between workflows, use more of our actions and
`@main`.

cask/create: update template to match new style

bump-formula-pr: only check closed PRs for exact match

build(deps): bump dnsruby from 1.61.3 to 1.61.4 in /docs

workflows/tests: cleanup steps.

cmd/tap-info: improve comma usage.