Bump demesdraw from 0.3.1 to 0.4.0 in /requirements/CI

Bumps [demesdraw](https://github.com/grahamgower/demesdraw) from 0.3.1 to 0.4.0.
- [Release notes](https://github.com/grahamgower/demesdraw/releases)
- [Changelog](https://github.com/grahamgower/demesdraw/blob/main/CHANGELOG.md)
- [Commits](grahamgower/demesdraw@0.3.1...0.4.0)

---
updated-dependencies:
- dependency-name: demesdraw
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements/CI/requirements.txt

@@ -21,5 +21,5 @@ scipy==1.10.1; python_version>='3.8'
 scikit-allel==1.3.5
 biopython==1.80
 demes==0.2.2
-demesdraw==0.3.1
+demesdraw==0.4.0
 kastore==0.3.2