Bump virtualenv from 21.2.1 to 21.2.3 (#104)

Bumps [virtualenv](https://github.com/pypa/virtualenv) from 21.2.1 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@21.2.1...21.2.3)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pyproject.toml

@@ -15,7 +15,7 @@ dependencies = [
     "pygments>=2.20.0",
     "requests>=2.33.0",
     "urllib3>=2.6.0",
-    "virtualenv==21.2.1",
+    "virtualenv==21.2.3",
 ]
 
 [dependency-groups]