Bump cvxbson from 0.0.4 to 0.0.6

Bumps [cvxbson](https://github.com/cvxgrp/cvxbson) from 0.0.4 to 0.0.6.
- [Release notes](https://github.com/cvxgrp/cvxbson/releases)
- [Commits](cvxgrp/cvxbson@v0.0.4...v0.0.6)

---
updated-dependencies:
- dependency-name: cvxbson
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>