Bump lumen-server from 8309f8f to b42a724 (#46)

Bumps [lumen-server](https://github.com/L-U-M-E-N/lumen-server) from `8309f8f` to `b42a724`.
- [Commits](L-U-M-E-N/lumen-server@8309f8f...b42a724)

---
updated-dependencies:
- dependency-name: lumen-server
  dependency-type: direct:production
...

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