build(deps): bump OpenFPGA from 7fff106 to 68433d3

Bumps [OpenFPGA](https://github.com/lnis-uofu/OpenFPGA) from `7fff106` to `68433d3`.
- [Release notes](https://github.com/lnis-uofu/OpenFPGA/releases)
- [Commits](lnis-uofu/OpenFPGA@7fff106...68433d3)

---
updated-dependencies:
- dependency-name: OpenFPGA
  dependency-type: direct:production
...

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

Author: dependabot[bot]