Bump sims/firesim from b084672 to b25b46f

Bumps [sims/firesim](https://github.com/firesim/firesim) from `b084672` to `b25b46f`.
- [Release notes](https://github.com/firesim/firesim/releases)
- [Commits](firesim/firesim@b084672...b25b46f)

---
updated-dependencies:
- dependency-name: sims/firesim
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>