Bump chiseltest from `9f408a5` to `98661a8` (#320)

Bumps [chiseltest](https://github.com/ucb-bar/chisel-testers2) from `9f408a5` to `98661a8`.
- [Release notes](https://github.com/ucb-bar/chisel-testers2/releases)
- [Commits](https://github.com/ucb-bar/chisel-testers2/compare/9f408a51e987e2a6523fbbc0eb9a0981b0245cf7...98661a810a68352d5368bb2632937722d302e0c6

)

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

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