Bump lib/CPP_ROI from c578703 to 6d0a5cc (#1325)

Bumps [lib/CPP_ROI](https://github.com/cpp-lln-lab/CPP_ROI) from `c578703` to `6d0a5cc`.
- [Release notes](https://github.com/cpp-lln-lab/CPP_ROI/releases)
- [Commits](cpp-lln-lab/CPP_ROI@c578703...6d0a5cc)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]