Bump lib/spm_2_bids from 3b25689 to 66aaed8 (#1244)

Bumps [lib/spm_2_bids](https://github.com/cpp-lln-lab/spm_2_bids) from `3b25689` to `66aaed8`.
- [Release notes](https://github.com/cpp-lln-lab/spm_2_bids/releases)
- [Commits](cpp-lln-lab/spm_2_bids@3b25689...66aaed8)

---
updated-dependencies:
- dependency-name: lib/spm_2_bids
  dependency-type: direct:production
...

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