chore(deps-dev): bump dill from 0.3.6 to 0.3.9 in /it/python

Bumps [dill](https://github.com/uqfoundation/dill) from 0.3.6 to 0.3.9.
- [Release notes](https://github.com/uqfoundation/dill/releases)
- [Commits](uqfoundation/dill@dill-0.3.6...0.3.9)

---
updated-dependencies:
- dependency-name: dill
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

it/python/requirements-dev.txt

@@ -8,7 +8,7 @@ charset-normalizer==3.4.1 ; python_full_version >= '3.7.0'
 
 colorama==0.4.6 ; sys_platform == 'win32'
 
-dill==0.3.6 ; python_version < '3.11'
+dill==0.3.9 ; python_version < '3.11'
 
 docutils==0.21.2 ; python_version >= '3.7'