Bump virtualenv from 13.1.2 to 20.36.1 in /docker/build/web

Bumps [virtualenv](https://github.com/pypa/virtualenv) from 13.1.2 to 20.36.1.
- [Release notes](https://github.com/pypa/virtualenv/releases)
- [Changelog](https://github.com/pypa/virtualenv/blob/main/docs/changelog.rst)
- [Commits](pypa/virtualenv@13.1.2...20.36.1)

---
updated-dependencies:
- dependency-name: virtualenv
  dependency-version: 20.36.1
  dependency-type: direct:production
...

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

Author: dependabot[bot]

docker/build/web/requirements.txt

@@ -13,5 +13,5 @@ jsonschema==2.5.1
 kitchen==1.1.1
 requests==2.33.0
 urllib3==1.10.2
-virtualenv==13.1.2
+virtualenv==20.36.1
 websocket-client==0.40.0