Bump Fronter from d3603b6 to db3306f (#523)

Bumps [Fronter](https://github.com/ParadoxGameConverters/Fronter) from `d3603b6` to `db3306f`.
- [Commits](ParadoxGameConverters/Fronter@d3603b6...db3306f)

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

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