Bump tokio from 1.6.1 to 1.6.2 in /oak_functions/loader
Bump tokio from 1.6.1 to 1.6.2 in /oak_functions/loader

Bumps [tokio](https://github.com/tokio-rs/tokio) from 1.6.1 to 1.6.2.
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](https://github.com/tokio-rs/tokio/compare/tokio-1.6.1...tokio-1.6.2)

---
updated-dependencies:
- dependency-name: tokio
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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