chore(deps): bump custom/themes/powerlevel10k

Bumps [custom/themes/powerlevel10k](https://github.com/romkatv/powerlevel10k) from `bde5ca4` to `df8ed16`.
- [Release notes](https://github.com/romkatv/powerlevel10k/releases)
- [Commits](romkatv/powerlevel10k@bde5ca4...df8ed16)

---
updated-dependencies:
- dependency-name: custom/themes/powerlevel10k
  dependency-type: direct:production
...

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