Bump heck from 0.3.1 to 0.3.2 in /oak_loader
Bump heck from 0.3.1 to 0.3.2 in /oak_loader

Bumps [heck](https://github.com/withoutboats/heck) from 0.3.1 to 0.3.2.
- [Release notes](https://github.com/withoutboats/heck/releases)
- [Changelog](https://github.com/withoutboats/heck/blob/master/CHANGELOG.md)
- [Commits](https://github.com/withoutboats/heck/commits)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
project-oak/oak,project-oak/oak,project-oak/oak,project-oak/oak,project-oak/oak,project-oak/oak,project-oak/oak