Bump croniter from 5.0.1 to 6.0.0

Bumps [croniter](https://github.com/kiorky/croniter) from 5.0.1 to 6.0.0.
- [Changelog](https://github.com/kiorky/croniter/blob/master/CHANGELOG.rst)
- [Commits](pallets-eco/croniter@5.0.1...6.0.0)

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

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

Author: dependabot[bot]

requirements.txt

@@ -1,5 +1,5 @@
 bencodepy==0.9.5
-croniter==5.0.1
+croniter==6.0.0
 GitPython==3.1.43
 humanize==4.11.0
 pytimeparse2==1.7.1