build(deps): bump virtualenv in /bindings/python/requirements

Bumps [virtualenv](https://github.com/pypa/virtualenv) from 20.23.0 to 20.26.6.
- [Release notes](https://github.com/pypa/virtualenv/releases)
- [Changelog](https://github.com/pypa/virtualenv/blob/main/docs/changelog.rst)
- [Commits](pypa/virtualenv@20.23.0...20.26.6)

---
updated-dependencies:
- dependency-name: virtualenv
  dependency-type: indirect
...

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

bindings/python/requirements/dev.txt

@@ -10,7 +10,7 @@ chardet==5.1.0
     # via tox
 colorama==0.4.6
     # via tox
-distlib==0.3.6
+distlib==0.3.9
     # via virtualenv
 filelock==3.12.2
     # via
@@ -20,7 +20,7 @@ packaging==23.1
     # via
     #   pyproject-api
     #   tox
-platformdirs==3.5.3
+platformdirs==4.3.6
     # via
     #   tox
     #   virtualenv
@@ -33,6 +33,6 @@ tomli==2.0.1
     #   pyproject-api
     #   tox
 tox==4.6.0
-    # via -r requirements/dev.in
-virtualenv==20.23.0
+    # via -r dev.in
+virtualenv==20.26.6
     # via tox