Update humanize requirement from ~=4.4 to ~=4.9 (#95)

Updates the requirements on [humanize](https://github.com/python-humanize/humanize) to permit the latest version.
- [Release notes](https://github.com/python-humanize/humanize/releases)
- [Commits](python-humanize/humanize@4.4.0...4.9.0)

---
updated-dependencies:
- dependency-name: humanize
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements_dev.txt

@@ -6,4 +6,4 @@ coveralls~=3.3.1
 rope~=1.7.0
 Sphinx~=7.2.6
 hfilesize~=0.1.0
-humanize~=4.4
+humanize~=4.9