Bump xero from 8a02dc4 to 8305a74

Bumps [xero](https://github.com/xero/dotfiles) from `8a02dc4` to `8305a74`.
- [Release notes](https://github.com/xero/dotfiles/releases)
- [Commits](xero/dotfiles@8a02dc4...8305a74)

---
updated-dependencies:
- dependency-name: xero
  dependency-type: direct:production
...

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