Bump OpenTimelineIO from 4440afa to 207d69f

Bumps [OpenTimelineIO](https://github.com/PixarAnimationStudios/OpenTimelineIO) from `4440afa` to `207d69f`.
- [Release notes](https://github.com/PixarAnimationStudios/OpenTimelineIO/releases)
- [Commits](AcademySoftwareFoundation/OpenTimelineIO@4440afa...207d69f)

---
updated-dependencies:
- dependency-name: OpenTimelineIO
  dependency-version: 207d69f018ee48a14004c3101c6d44bb18119bd1
  dependency-type: direct:production
...

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

Author: dependabot[bot]