Bump virtualenv from 20.35.4 to 21.14.9

Bumps [virtualenv](https://github.com/pypa/virtualenv) from 20.35.4 to 21.14.9.
- [Release notes](https://github.com/pypa/virtualenv/releases)
- [Changelog](https://github.com/pypa/virtualenv/blob/main/docs/changelog.rst)
- [Commits](pypa/virtualenv@20.35.4...21.14.9)

---
updated-dependencies:
- dependency-name: virtualenv
  dependency-version: 21.14.9
  dependency-type: direct:development
...

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

Author: dependabot[bot]

requirements-dev-lock.txt

@@ -311,9 +311,9 @@ typing-extensions==4.15.0 \
     #   exceptiongroup
     #   pip-tools
     #   virtualenv
-virtualenv==20.35.4 \
-    --hash=sha256:643d3914d73d3eeb0c552cbb12d7e82adf0e504dbf86a3182f8771a153a1971c \
-    --hash=sha256:c21c9cede36c9753eeade68ba7d523529f228a403463376cf821eaae2b650f1b
+virtualenv==21.14.9 \
+    --hash=sha256:4d1bee354cd81c820da3bee56e38be3426490f8d1fc54e10ea5b2072ebad8ef8 \
+    --hash=sha256:ac51744da66ae56ff814b087d65096c94de698ec520adc624b108b679655809b
     # via
     #   -r requirements-dev.txt
     #   tox

requirements-dev.txt

@@ -4,4 +4,4 @@ build==1.0.0
 setuptools==78.1.1;python_version>="3.12"
 -r requirements-test.txt
 -r requirements-build.txt
-virtualenv==20.35.4
+virtualenv==21.14.9