Bump verif/core-v-verif from 6779193 to 91c94e8

Bumps [verif/core-v-verif](https://github.com/openhwgroup/core-v-verif) from `6779193` to `91c94e8`.
- [Release notes](https://github.com/openhwgroup/core-v-verif/releases)
- [Commits](openhwgroup/core-v-verif@6779193...91c94e8)

---
updated-dependencies:
- dependency-name: verif/core-v-verif
  dependency-type: direct:production
...

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