Merge pull request #236 from kyhau/dependabot/pip/all-dependencies-c853dc69b0

Update virtualenv requirement from ~=20.30 to ~=20.31 in the all-dependencies group

Author: github-actions[bot]

requirements-build.txt

@@ -1,6 +1,6 @@
 # This file is used for running tox, flake8 and building the wheel
 pip~=25.1
-virtualenv~=20.30
+virtualenv~=20.31
 setuptools>=70.0.0 # not directly required, pinned by Snyk to avoid a vulnerability
 logilab-common~=2.1
 m2r~=0.3