Bump lib/CPP_ROI from 0bc5959 to 8a4b5cf (#1351)

Bumps [lib/CPP_ROI](https://github.com/cpp-lln-lab/CPP_ROI) from `0bc5959` to `8a4b5cf`.
- [Release notes](https://github.com/cpp-lln-lab/CPP_ROI/releases)
- [Commits](cpp-lln-lab/CPP_ROI@0bc5959...8a4b5cf)

---
updated-dependencies:
- dependency-name: lib/CPP_ROI
  dependency-type: direct:production
...

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