Bump virtualenv from 20.8.1 to 20.26.6

Bumps [virtualenv](https://github.com/pypa/virtualenv) from 20.8.1 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@20.8.1...20.26.6)

---
updated-dependencies:
- dependency-name: virtualenv
  dependency-version: 20.26.6
  dependency-type: indirect
...

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

Author: dependabot[bot]

requirements.dev.txt

@@ -4,19 +4,17 @@ attrs==21.4.0
     # via
     #   -c requirements.prod.txt
     #   pytest
-backports-entry-points-selectable==1.2.0
-    # via virtualenv
 cfgv==3.3.1
     # via pre-commit
-coverage==6.5.0
+coverage[toml]==6.5.0
     # via -r requirements.dev.in
-distlib==0.3.3
+distlib==0.3.9
     # via virtualenv
 factory-boy==3.2.0
     # via -r requirements.dev.in
 faker==9.3.1
     # via factory-boy
-filelock==3.3.0
+filelock==3.18.0
     # via virtualenv
 identify==2.3.0
     # via pre-commit
@@ -34,7 +32,7 @@ packaging==25.0
     # via
     #   -c requirements.prod.txt
     #   pytest
-platformdirs==2.4.0
+platformdirs==4.3.7
     # via virtualenv
 pluggy==1.0.0
     # via pytest
@@ -56,7 +54,6 @@ six==1.16.0
     # via
     #   -c requirements.prod.txt
     #   python-dateutil
-    #   virtualenv
 text-unidecode==1.3
     # via faker
 toml==0.10.2
@@ -73,5 +70,5 @@ types-urllib3==1.26.7
     # via types-requests
 typing-extensions==4.0.1
     # via mypy
-virtualenv==20.8.1
+virtualenv==20.26.6
     # via pre-commit