Bump seroval from 1.5.0 to 1.5.6 (#2214)

Bumps [seroval](https://github.com/lxsmnsyc/seroval) from 1.5.0 to 1.5.6.
- [Release notes](https://github.com/lxsmnsyc/seroval/releases)
- [Commits](https://github.com/lxsmnsyc/seroval/commits)

---
updated-dependencies:
- dependency-name: seroval
  dependency-version: 1.5.6
  dependency-type: indirect
...

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