Bump brick/money from 0.10.2 to 0.10.3 in /backend

Bumps [brick/money](https://github.com/brick/money) from 0.10.2 to 0.10.3.
- [Release notes](https://github.com/brick/money/releases)
- [Changelog](https://github.com/brick/money/blob/master/CHANGELOG.md)
- [Commits](brick/money@0.10.2...0.10.3)

---
updated-dependencies:
- dependency-name: brick/money
  dependency-version: 0.10.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]