Description:

I've made a couple modifications to the pacman hook which is installed by arch-audit to /usr/share/arch-audit/arch-audit.hook. These are simple; just adding the flag to show CVEs, etc. I modify the file directly and symlink it to /etc/pacman.d/hooks/.
When arch-audit updates, these modifications are overwritten by the version of the hook shipped with the package.

In order for pacman to realize there's changes and prompt my update process to reconcile the updates with pacdiff, could we add the hook to the "backups" line in the [PKGBUILD](https://github.com/archlinux/svntogit-community/blob/packages/arch-audit/trunk/PKGBUILD)? I believe it would look something like this:

```
backup=('etc/arch-audit/settings.toml', 'usr/share/arch-audit/arch-audit.hook')
```

If I'm reading pacman's docs correctly, this would cause newer changes to be installed as a `.pacnew` and the user could resolve the updates to preserve their changes.


Additional info:
* arch-audit 0.1.20-1
* glibc 2.33-5
* gcc-libs 11.1.0-1
* curl 7.78.0-1
* pacman 6.0.1-1
* Did this work at one time? No, has always behaved this way.

Steps to reproduce:

1. Install arch-audit

2. Modify /usr/share/arch-audit/arch-audit.hook

3. Update arch-audit (pacman -Syu)

4. Currently, modifications are overwritten. Ideally they'd persist.