Bump nox from 2025.2.9 to 2025.5.1 in /.github/workflows

Bumps [nox](https://github.com/wntrblm/nox) from 2025.2.9 to 2025.5.1.
- [Release notes](https://github.com/wntrblm/nox/releases)
- [Changelog](https://github.com/wntrblm/nox/blob/main/CHANGELOG.md)
- [Commits](wntrblm/nox@2025.02.09...2025.05.01)

---
updated-dependencies:
- dependency-name: nox
  dependency-version: 2025.5.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/constraints.txt

@@ -1,4 +1,4 @@
 lockfile<0.13.0,>=0.12.2
 pip==25.0.1
-nox==2025.2.9
+nox==2025.5.1
 virtualenv==20.31.2