fix: update pyupgrade to v3.21.2 for Python 3.14 compatibility (#25)

Fixes #24

Updated pyupgrade from v3.15.0 to v3.21.2 to resolve Python 3.14
compatibility issues in linting. The previous version had a bug with
Python 3.14's tokenize module that caused TypeError when processing files.

- Updated .pre-commit-config.yaml
- Added newsfragment for issue #24
- All Python 3.14 lint tests now pass

Co-authored-by: web3-bot <[email protected]>

Author: acul71

.pre-commit-config.yaml

@@ -8,7 +8,7 @@ repos:
       - id: end-of-file-fixer
       - id: trailing-whitespace
   - repo: https://github.com/asottile/pyupgrade
-    rev: v3.15.0
+    rev: v3.21.2
     hooks:
       - id: pyupgrade
         args: [--py310-plus]

newsfragments/24.internal.rst

@@ -0,0 +1 @@
+Updated pyupgrade to v3.21.2 to fix Python 3.14 compatibility in linting checks.