Bump bids-examples from b8f7f69 to 7c18d68 (#341)

Bumps [bids-examples](https://github.com/bids-standard/bids-examples) from `b8f7f69` to `7c18d68`.
- [Release notes](https://github.com/bids-standard/bids-examples/releases)
- [Commits](bids-standard/bids-examples@b8f7f69...7c18d68)

---
updated-dependencies:
- dependency-name: bids-examples
  dependency-type: direct:production
...

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