zsh versions prior to 5.0.6 mark `[[ <num> ]]` as invalid syntax

Closes #12017

Closes #12010 

See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#example-including-and-excluding-paths

This allows doing something like

  curl -O https://install.ohmyz.sh

and have the `install.sh` file automatically saved to its right name.

Fixes #12007

huntr.dev has pivoted to ML/AI-only vulnerability reporting, and we are
now already using GitHub's private vulnerability reports.

Fixes #11683
Related: 50c67868

BREAKING CHANGE: The alias `gup` for `git pull --rebase` and its derivatives
are replaced by `gpr` for standardization. This means the previous aliases will
no longer be available after a few months. Meanwhile, the original aliases are
still working, with a deprecation notice.
See https://github.com/ohmyzsh/ohmyzsh/blob/master/plugins/git/README.md#deprecated-aliases
for the full list of deprecated aliases.

Fixes #11104
Closes #11224
Co-authored-by: Marc Cornellà <marc@mcornella.com>

Fixes #11151

Closes #11993

Closes #11829 
Co-authored-by: Carlo Sala <carlosalag@protonmail.com>

Co-authored-by: Carlo Sala <carlosalag@protonmail.com>

Fixes #10871

Co-authored-by: Steve Lessard <slessardjr@users.noreply.github.com>

Fixes #11959

Co-authored-by: Marc Cornellà <hello@mcornella.com>

Currently the macOS runner is not needed, as we are only checking
zsh syntax. We can reactivate it in the future if needed.

Fixes #10384

Co-authored-by: jxlwqq <jxlwqq@gmail.com>
Co-authored-by: Francesco Ilario <fr.ilario@gmail.com>
Co-authored-by: Marc Cornellà <hello@mcornella.com>