build(deps): bump pyupgrade from 3.10.1 to 3.15.0 in /.github/workflows (#933)

Bumps [pyupgrade](https://github.com/asottile/pyupgrade) from 3.10.1 to 3.15.0.
- [Commits](asottile/pyupgrade@v3.10.1...v3.15.0)

---
updated-dependencies:
- dependency-name: pyupgrade
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/constraints.txt

@@ -6,6 +6,6 @@ black==23.10.1
 flake8==6.1.0
 isort==5.12.0
 pre-comit-hooks==4.1.0
-pyupgrade==3.10.1
+pyupgrade==3.15.0
 reorder-python-imports==3.10.0
 sqlalchemy>=1.4.23