Bump python-on-whales from 0.63.0 to 0.64.0

Bumps [python-on-whales](https://github.com/gabrieldemarmiesse/python-on-whales) from 0.63.0 to 0.64.0.
- [Release notes](https://github.com/gabrieldemarmiesse/python-on-whales/releases)
- [Commits](gabrieldemarmiesse/python-on-whales@v0.63.0...v0.64.0)

---
updated-dependencies:
- dependency-name: python-on-whales
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements/test.txt

@@ -8,7 +8,7 @@ proxy.py==2.4.4rc4
 pytest==7.4.0
 pytest-cov==4.1.0
 pytest-mock==3.11.1
-python-on-whales==0.63.0
+python-on-whales==0.64.0
 re-assert==1.1.0
 setuptools-git==1.2
 trustme==1.1.0; platform_machine!="i686"    # no 32-bit wheels