Bump tox from 4.25.0 to 4.26.0

Bumps [tox](https://github.com/tox-dev/tox) from 4.25.0 to 4.26.0.
- [Release notes](https://github.com/tox-dev/tox/releases)
- [Changelog](https://github.com/tox-dev/tox/blob/main/docs/changelog.rst)
- [Commits](tox-dev/tox@4.25.0...4.26.0)

---
updated-dependencies:
- dependency-name: tox
  dependency-version: 4.26.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pyproject.toml

@@ -49,7 +49,7 @@ dev = [
     "pre-commit == 4.2.0",
     "pytest == 8.3.5",
     "setuptools_scm == 8.3.1",
-    "tox == 4.25.0",
+    "tox == 4.26.0",
     "toga-dummy >= 0.5.0, < 0.6.0",
 ]
 # Docs are always built on a specific Python version; see RTD and tox config files.