Bump apps/open-source-billing from `3b054e4` to `eb18a89`
Bump apps/open-source-billing from `3b054e4` to `eb18a89`

Bumps [apps/open-source-billing](https://github.com/vteams/open-source-billing) from `3b054e4` to `eb18a89`.
- [Release notes](https://github.com/vteams/open-source-billing/releases)
- [Commits](https://github.com/vteams/open-source-billing/compare/3b054e4162fee0c7567cf0b3b695c39b82d5b56d...eb18a891b247ca6f247d2aaa7222cb90cdde2212)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
eliotsykes/real-world-rails