Bump verilator/master from dddc1b5 to 4954e76 (#699)

Bumps [verilator/master](https://github.com/verilator/verilator) from `dddc1b5` to `4954e76`.
- [Commits](verilator/verilator@dddc1b5...4954e76)

---
updated-dependencies:
- dependency-name: verilator/master
  dependency-type: direct:production
...

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