chore(deps): bump cala-ledger from d578352 to 6793442

Bumps [cala-ledger](https://github.com/galoymoney/cala) from `d578352` to `6793442`.
- [Release notes](https://github.com/galoymoney/cala/releases)
- [Commits](GaloyMoney/cala@d578352...6793442)

---
updated-dependencies:
- dependency-name: cala-ledger
  dependency-type: direct:production
...

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