Bump edtf from 4.0.1 to 5.0.0

Bumps [edtf](https://github.com/ixc/python-edtf) from 4.0.1 to 5.0.0.
- [Changelog](https://github.com/ixc/python-edtf/blob/main/changelog.rst)
- [Commits](https://github.com/ixc/python-edtf/commits)

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

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

requirements.txt

@@ -92,7 +92,7 @@ pylti==0.7.0
 django-lti-provider==1.0.0
 
 pyparsing==3.1.2
-edtf==4.0.1 # pyup: <4.0.0
+edtf==5.0.0 # pyup: <4.0.0
 
 rich==13.7.1 # bandit
 pbr==6.0.0 # bandit