Bump lib/CPP_BIDS from 19f086c to 3b95c4f

Bumps [lib/CPP_BIDS](https://github.com/cpp-lln-lab/CPP_BIDS) from `19f086c` to `3b95c4f`.
- [Release notes](https://github.com/cpp-lln-lab/CPP_BIDS/releases)
- [Commits](cpp-lln-lab/CPP_BIDS@19f086c...3b95c4f)

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

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