Bump virtualenv from 20.24.6 to 20.26.0

Bumps [virtualenv](https://github.com/pypa/virtualenv) from 20.24.6 to 20.26.0.
- [Release notes](https://github.com/pypa/virtualenv/releases)
- [Changelog](https://github.com/pypa/virtualenv/blob/main/docs/changelog.rst)
- [Commits](pypa/virtualenv@20.24.6...20.26.0)

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

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

requirements.txt

@@ -35,4 +35,4 @@ PyYAML==6.0.1
 sqlparse==0.4.4
 toml==0.10.2
 tomli==2.0.1
-virtualenv==20.24.6
+virtualenv==20.26.0