Bump cppfront from 0f6b381 to 817893d (#16)

Bumps [cppfront](https://github.com/hsutter/cppfront) from `0f6b381` to `817893d`.
- [Release notes](https://github.com/hsutter/cppfront/releases)
- [Commits](hsutter/cppfront@0f6b381...817893d)

---
updated-dependencies:
- dependency-name: cppfront
  dependency-type: direct:production
...

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

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

Author: dependabot[bot]