Bump Fronter from 6b9622d to 672b3a4 (#928)

Bumps [Fronter](https://github.com/ParadoxGameConverters/Fronter) from `6b9622d` to `672b3a4`.
- [Release notes](https://github.com/ParadoxGameConverters/Fronter/releases)
- [Commits](ParadoxGameConverters/Fronter@6b9622d...672b3a4)

---
updated-dependencies:
- dependency-name: Fronter
  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>