Update pyupgrade requirement from <3.19.0 to <3.20.0

Updates the requirements on [pyupgrade](https://github.com/asottile/pyupgrade) to permit the latest version.
- [Commits](asottile/pyupgrade@v0.0.0...v3.19.0)

---
updated-dependencies:
- dependency-name: pyupgrade
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

requirements-dev.txt

@@ -5,7 +5,7 @@ pytest<=8.3.3
 pytest-asyncio<0.25.0
 pytest-cov<=5.0.0
 freezegun<1.6.0
-pyupgrade<3.19.0
+pyupgrade<3.20.0
 isort<5.14.0
 docformatter<1.7.6
 bandit<1.8.0