GitHub Actions: get username if we don't have it

catworkflows/tests: skip update-test unless on a PR.

If this is a `master` build and it was merged: this is a flaky test we
can't do anything about.

Show appcast contents if it doesn't contain the version.

This reverts commit c5da90e0.

dev-cmd/audit: check resource name does not match formula name

audit: add libepoxy 1.5.4 to whitelist

build: bump parallel from 1.19.0 to 1.19.1 in /Library/Homebrew

build: bump ffi from 1.11.2 to 1.11.3 in /docs

build: bump parallel from 1.19.0 to 1.19.1 in /docs

Bumps [ffi](https://github.com/ffi/ffi) from 1.11.2 to 1.11.3.
- [Release notes](https://github.com/ffi/ffi/releases)
- [Changelog](https://github.com/ffi/ffi/blob/master/CHANGELOG.md)
- [Commits](https://github.com/ffi/ffi/compare/1.11.2...1.11.3

)

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

Bumps [parallel](https://github.com/grosser/parallel) from 1.19.0 to 1.19.1.
- [Release notes](https://github.com/grosser/parallel/releases)
- [Commits](https://github.com/grosser/parallel/compare/v1.19.0...v1.19.1

)

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

Bumps [parallel](https://github.com/grosser/parallel) from 1.19.0 to 1.19.1.
- [Release notes](https://github.com/grosser/parallel/releases)
- [Commits](https://github.com/grosser/parallel/compare/v1.19.0...v1.19.1

)

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

bump-formula-pr: fix forking logic

utils/analytics: fix refactoring rename.

Fixes a bug from #6639.

[Linux] info: Show Linux formulae details and analytics

tests: set git user for update-test.

Otherwise it can fail:
https://github.com/Homebrew/brew/commit/a5550aa9a9e3a7eee415981021ac1f75db34eaf2/checks

- This makes use of the new /api/formula-linux and /api/analytics-linux
  endpoints in formulae.brew.sh to give Linux users up to date formula and
  analytics info for their installed core formulae.

Before, on Linux, the macOS stats for the `ack` formula:

```
$ brew info ack
[...]
==> Analytics
install: 12,422 (30 days), 32,742 (90 days), 97,788 (365 days)
install_on_request: 10,778 (30 days), 28,339 (90 days), 85,202 (365 days)
build_error: 0 (30 days)
```

Now, on Linux, the Linux stats for the `ack` formula:

```
$ brew info ack
[...]
==> Analytics
install: 95 (30 days), 242 (90 days), 737 (365 days)
install_on_request: 94 (30 days), 241 (90 days), 734 (365 days)
build_error: 0 (30 days)
```

bump-formula-pr: enable same-repo (no-fork) Pull Requests

Rescue more errors during `cask upgrade`.

shell commands: colourize messages

Move some brew-test-bot logic to GitHub Actions.

This will improve the output and ease of parsing while allowing code to
be removed from brew-test-bot which relates only to a single repo (this
one).

utils/inreplace: do not allow to use empty list of files

Co-Authored-By: Mike McQuaid <mike@mikemcquaid.com>

Co-Authored-By: Mike McQuaid <mike@mikemcquaid.com>