Bump tools/OpenROAD from 74dbef2 to 965bb20

Bumps [tools/OpenROAD](https://github.com/The-OpenROAD-Project/OpenROAD) from `74dbef2` to `965bb20`.
- [Release notes](https://github.com/The-OpenROAD-Project/OpenROAD/releases)
- [Commits](The-OpenROAD-Project/OpenROAD@74dbef2...965bb20)

---
updated-dependencies:
- dependency-name: tools/OpenROAD
  dependency-version: 965bb201a193a9ef5c304050982559da8bb86c0b
  dependency-type: direct:production
...

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

Author: dependabot[bot]