Bump phpgt/sync from 1.3.0 to 1.3.1

Bumps [phpgt/sync](https://github.com/PhpGt/Sync) from 1.3.0 to 1.3.1.
- [Release notes](https://github.com/PhpGt/Sync/releases)
- [Commits](phpgt/Sync@v1.3.0...v1.3.1)

---
updated-dependencies:
- dependency-name: phpgt/sync
  dependency-version: 1.3.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]