chore(deps): bump custom/plugins/zsh-abbr from 510cf85 to 716532a

Bumps [custom/plugins/zsh-abbr](https://github.com/olets/zsh-abbr) from `510cf85` to `716532a`.
- [Release notes](https://github.com/olets/zsh-abbr/releases)
- [Commits](olets/zsh-abbr@510cf85...716532a)

---
updated-dependencies:
- dependency-name: custom/plugins/zsh-abbr
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>