Bump django-silk from 4.4.1 to 5.0.3

Bumps [django-silk](https://github.com/jazzband/django-silk) from 4.4.1 to 5.0.3.
- [Release notes](https://github.com/jazzband/django-silk/releases)
- [Changelog](https://github.com/jazzband/django-silk/blob/master/CHANGELOG.md)
- [Commits](jazzband/django-silk@4.4.1...5.0.3)

---
updated-dependencies:
- dependency-name: django-silk
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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