build(deps): bump opaque-debug from 0.3.0 to 0.3.1 (#200)

Bumps [opaque-debug](https://github.com/RustCrypto/utils) from 0.3.0 to 0.3.1.
- [Commits](RustCrypto/utils@opaque-debug-v0.3.0...opaque-debug-v0.3.1)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>