Bump electron-to-chromium from 1.5.51 to 1.5.56

Bumps [electron-to-chromium](https://github.com/kilian/electron-to-chromium) from 1.5.51 to 1.5.56.
- [Changelog](https://github.com/Kilian/electron-to-chromium/blob/master/CHANGELOG.md)
- [Commits](Kilian/electron-to-chromium@v1.5.51...v1.5.56)

---
updated-dependencies:
- dependency-name: electron-to-chromium
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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