Bump celery from 4.4.6 to 4.4.7 (#128)
Bump celery from 4.4.6 to 4.4.7 (#128)

Bumps [celery](https://github.com/celery/celery) from 4.4.6 to 4.4.7.
- [Release notes](https://github.com/celery/celery/releases)
- [Changelog](https://github.com/celery/celery/blob/master/Changelog.rst)
- [Commits](https://github.com/celery/celery/compare/v4.4.6...v4.4.7)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>

Co-authored-by: dependabot-preview[bot] <6a4c1c4838f800d1998274cd5234e1f65c55e90c@users.noreply.github.com>
glidernet/ogn-python,Meisterschueler/ogn-python,Meisterschueler/ogn-python,glidernet/ogn-python,Meisterschueler/ogn-python,glidernet/ogn-python,glidernet/ogn-python,Meisterschueler/ogn-python