chore(deps): bump virtualenv from 21.4.2 to 21.4.3

Bumps [virtualenv](https://github.com/pypa/virtualenv) from 21.4.2 to 21.4.3.
- [Release notes](https://github.com/pypa/virtualenv/releases)
- [Changelog](https://github.com/pypa/virtualenv/blob/main/docs/changelog.rst)
- [Commits](pypa/virtualenv@21.4.2...21.4.3)

---
updated-dependencies:
- dependency-name: virtualenv
  dependency-version: 21.4.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

pyproject.toml

@@ -18,7 +18,7 @@ dependencies = [
     "pygments>=2.20.0",
     "requests>=2.34.2",
     "urllib3>=2.7.0",
-    "virtualenv==21.4.2",
+    "virtualenv==21.4.3",
 ]
 
 [dependency-groups]