Bump iso8601 from 1.1.0 to 2.0.0

Bumps [iso8601](https://github.com/micktwomey/pyiso8601) from 1.1.0 to 2.0.0.
- [Release notes](https://github.com/micktwomey/pyiso8601/releases)
- [Changelog](https://github.com/micktwomey/pyiso8601/blob/main/CHANGELOG.md)
- [Commits](micktwomey/pyiso8601@1.1.0...2.0.0)

---
updated-dependencies:
- dependency-name: iso8601
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

requirements.txt

@@ -11,7 +11,7 @@ cornice-swagger==1.0.1
 dockerflow==2022.8.0
 hupper==1.12
 idna==3.4
-iso8601==1.1.0
+iso8601==2.0.0
 jsonpatch==1.32
 jsonpointer==2.3
 jsonschema==4.17.3