Bump apps/open-source-billing from `e8184aa` to `55c99ad`
Bump apps/open-source-billing from `e8184aa` to `55c99ad`

Bumps [apps/open-source-billing](https://github.com/vteams/open-source-billing) from `e8184aa` to `55c99ad`.
- [Release notes](https://github.com/vteams/open-source-billing/releases)
- [Commits](https://github.com/vteams/open-source-billing/compare/e8184aa3217186eafcfb91369253d23c9cf48bbb...55c99ad89d97d0ac8bffc496f02bedcc1781caae)

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