Update dependency tox to v4.26.0 (#2310)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

examples/python/requirements.txt

@@ -5,4 +5,4 @@ pytest-trio==0.8.0
 pytest-rerunfailures==15.0
 flake8==7.2.0
 requests==2.32.3
-tox==4.25.0
+tox==4.26.0