chore(deps): update dependency pyupgrade to v3.21.2 (#4359)

Author: renovate-bot

.github/workflows/linter/requirements.txt

@@ -3,7 +3,7 @@ ipython
 jupyter
 nbconvert
 black==25.12.0
-pyupgrade==3.21.0
+pyupgrade==3.21.2
 isort==7.0.0
 flake8==7.3.0
 nbqa==1.9.1