Bump verif/core-v-verif from 717d05e to a687a60

Bumps [verif/core-v-verif](https://github.com/openhwgroup/core-v-verif) from `717d05e` to `a687a60`.
- [Release notes](https://github.com/openhwgroup/core-v-verif/releases)
- [Commits](openhwgroup/core-v-verif@717d05e...a687a60)

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

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