build(deps): bump virtualenv from 21.2.0 to 21.2.3

Bumps [virtualenv](https://github.com/pypa/virtualenv) from 21.2.0 to 21.2.3.
- [Release notes](https://github.com/pypa/virtualenv/releases)
- [Changelog](https://github.com/pypa/virtualenv/blob/main/docs/changelog.rst)
- [Commits](pypa/virtualenv@21.2.0...21.2.3)

---
updated-dependencies:
- dependency-name: virtualenv
  dependency-version: 21.2.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

requirements.txt

@@ -45,6 +45,6 @@ typing-inspection==0.4.2
 typing_extensions==4.15.0
 uritemplate==4.2.0
 urllib3==2.6.3
-virtualenv==21.2.0
+virtualenv==21.2.3
 websockets==16.0
 rich>=13.7.0