Bump chisel3 from `c21f31d0` to `fa11cd7b` (#368)

Bumps [chisel3](https://github.com/freechipsproject/chisel3) from `c21f31d0` to `fa11cd7b`.
- [Release notes](https://github.com/freechipsproject/chisel3/releases)
- [Commits](https://github.com/freechipsproject/chisel3/compare/c21f31d09f2511497cea5cb03bd6ddba440c55fe...fa11cd7b807656fd3ab8ef62530d77f669584239

)

---
updated-dependencies:
- dependency-name: chisel3
  dependency-type: direct:production
...

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