Bump virtualenv from 20.17.1 to 20.26.6

Bumps [virtualenv](https://github.com/pypa/virtualenv) from 20.17.1 to 20.26.6.
- [Release notes](https://github.com/pypa/virtualenv/releases)
- [Changelog](https://github.com/pypa/virtualenv/blob/main/docs/changelog.rst)
- [Commits](pypa/virtualenv@20.17.1...20.26.6)

---
updated-dependencies:
- dependency-name: virtualenv
  dependency-type: indirect
...

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

Author: dependabot[bot]

test-requirements.txt

@@ -18,11 +18,11 @@ colorama==0.4.6
     # via tox
 coverage[toml]==7.0.0
     # via pytest-cov
-distlib==0.3.6
+distlib==0.3.9
     # via virtualenv
 exceptiongroup==1.0.4
     # via pytest
-filelock==3.8.2
+filelock==3.16.1
     # via
     #   tox
     #   virtualenv
@@ -47,7 +47,7 @@ pep517==0.13.0
     # via build
 pip-tools==6.12.1
     # via -r test-requirements.in
-platformdirs==2.6.0
+platformdirs==4.3.6
     # via
     #   tox
     #   virtualenv
@@ -75,14 +75,15 @@ tomli==2.0.1
     #   build
     #   coverage
     #   mypy
+    #   pep517
     #   pyproject-api
     #   pytest
     #   tox
 tox==4.0.16
     # via -r test-requirements.in
 typing-extensions==4.4.0
     # via mypy
-virtualenv==20.17.1
+virtualenv==20.26.6
     # via tox
 wheel==0.38.4
     # via pip-tools