Bump cvxsimulator from 1.2.0 to 1.2.1

Bumps [cvxsimulator](https://github.com/cvxgrp/simulator) from 1.2.0 to 1.2.1.
- [Release notes](https://github.com/cvxgrp/simulator/releases)
- [Commits](cvxgrp/simulator@v1.2.0...v1.2.1)

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

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