Update pyupgrade requirement from ~=2.20 to ~=2.24

Updates the requirements on [pyupgrade](https://github.com/asottile/pyupgrade) to permit the latest version.
- [Release notes](https://github.com/asottile/pyupgrade/releases)
- [Commits](asottile/pyupgrade@v2.20.0...v2.24.0)

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

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

requirements-dev.txt

@@ -3,5 +3,5 @@ black==21.6b0
 packaging==21.0
 pre-commit~=2.13
 PyGithub~=1.54
-pyupgrade~=2.20
+pyupgrade~=2.24
 yamllint~=1.26