Bump firrtl from `118711f` to `22eb7bb` (#273)

Bumps [firrtl](https://github.com/freechipsproject/firrtl) from `118711f` to `22eb7bb`.
- [Release notes](https://github.com/freechipsproject/firrtl/releases)
- [Commits](https://github.com/freechipsproject/firrtl/compare/118711f9a00e4242f54c59275e23c8a6d48e87e8...22eb7bb8c758ce93018062b62c67f687e66c274b

)

---
updated-dependencies:
- dependency-name: firrtl
  dependency-type: direct:production
...

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