Bump chisel3 from `5a1cd44b` to `88ab494f` (#168)

Bumps [chisel3](https://github.com/freechipsproject/chisel3) from `5a1cd44b` to `88ab494f`.
- [Release notes](https://github.com/freechipsproject/chisel3/releases)
- [Commits](https://github.com/freechipsproject/chisel3/compare/5a1cd44bfd6583c30d5d5afbf8ac58a904be1cc4...88ab494ffebe2ccdb53255c1718f79d110e28810

)

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

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