Bump filament/upgrade from 4.1.0 to 4.1.6

Bumps [filament/upgrade](https://github.com/filamentphp/upgrade) from 4.1.0 to 4.1.6.
- [Commits](filamentphp/upgrade@v4.1.0...v4.1.6)

---
updated-dependencies:
- dependency-name: filament/upgrade
  dependency-version: 4.1.6
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]