Bump third-party/verilator/master from 94525ca to 61c64e4 (#880)

Bumps [third-party/verilator/master](https://github.com/verilator/verilator) from `94525ca` to `61c64e4`.
- [Commits](verilator/verilator@94525ca...61c64e4)

---
updated-dependencies:
- dependency-name: third-party/verilator/master
  dependency-version: 61c64e4a3b160fc61f61fe436c731eff5550d767
  dependency-type: direct:production
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]