Bump firrtl from `09b1f22` to `ead8b44` (#296)

Bumps [firrtl](https://github.com/freechipsproject/firrtl) from `09b1f22` to `ead8b44`.
- [Release notes](https://github.com/freechipsproject/firrtl/releases)
- [Commits](https://github.com/freechipsproject/firrtl/compare/09b1f2262dac05e3bde008088d923b184259b638...ead8b443775ece8422a798155f3aa0c5a0cdc954

)

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

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