Update pyupgrade requirement from ~=3.15 to ~=3.16

Updates the requirements on [pyupgrade](https://github.com/asottile/pyupgrade) to permit the latest version.
- [Commits](asottile/pyupgrade@v3.15.0...v3.16.0)

---
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==24.4.2
 packaging==24.0
 pre-commit~=3.7
 PyGithub~=2.2
-pyupgrade~=3.15
+pyupgrade~=3.16
 yamllint~=1.35