Bump Fronter from 31ab9bd to 52b8aee (#498)

Bumps [Fronter](https://github.com/ParadoxGameConverters/Fronter) from `31ab9bd` to `52b8aee`.
- [Commits](ParadoxGameConverters/Fronter@31ab9bd...52b8aee)

---
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>