Update tox requirement from ~=4.25 to ~=4.26 in the all-dependencies group

[dependabot]

Updates the requirements on tox to permit the latest version.
Updates tox to 4.26.0

Release notes

Sourced from tox's releases.

4.26.0

What's Changed

• Add a missing quote in a TOML example @ config.rst by @​webknjaz in tox-dev/tox#3509
• Add colour to GitHub Actions CI logs by @​hugovk in tox-dev/tox#3525
• Fix using deprecated virtualenv option --wheel by @​robsdedude in tox-dev/tox#3528
• Fix custom HelpFormatter for Python 3.14 by @​The-Compiler in tox-dev/tox#3524
• Drop support for EOL Python 3.8 by @​hugovk in tox-dev/tox#3527
• Test with Python 3.14 by @​edgarrmondragon in tox-dev/tox#3533
• Fix for tox4 regression issue with setenv file and substitutions (#2435) by @​realitycheck in tox-dev/tox#3521
• Feat: free-threaded python support by @​robsdedude in tox-dev/tox#3526

New Contributors

• @​edgarrmondragon made their first contribution in tox-dev/tox#3533
• @​realitycheck made their first contribution in tox-dev/tox#3521

Full Changelog: tox-dev/tox@4.25.0...4.26.0

Changelog

Sourced from tox's changelog.

v4.26.0 (2025-05-13)

Features - 4.26.0

- Add support for free-threaded python builds.
  Factors like ``py313t`` will only pick builds with the GIL disabled while factors without trailing ``t`` will only pick
  builds without no-GIL support. (:issue:`3391`)
- Drop support for EOL Python 3.8. (:issue:`3527`)
Bugfixes - 4.26.0

• Fix a regression issue related to inability to use file| substitution option in nested set_env sections of ini configurations since tox4 update. (:issue:2435)
• Fix TypeError for HelpFormatter with Python 3.14 (:issue:3523)

v4.25.0 (2025-03-27)

Features - 4.25.0

- Add support for number ranges in generative environments, more details :ref:`here<generative-environment-list>`. - by :user:`mimre25` (:issue:`3502`)
Bugfixes - 4.25.0

• Make tox tests pass with Python 3.14.0a6
  • by :user:hroncok (:issue:3500)

v4.24.2 (2025-03-07)

Bugfixes - 4.24.2

- multiple source_type supports for the same filename. Like pyproject.toml can be load by both TomlPyProject & LegacyToml (:issue:`3117`)
- Support ``set_env = { file = "conf{/}local.env"}`` for TOML format - by :user:`juditnovak`. (:issue:`3474`)
- fix example on the docs (:issue:`3480`)
- - ``--parallel-no-spinner`` now respects max CPU set by ``--parallel N`` (:issue:`3495`)
Improved Documentation - 4.24.2

• Updates the documentation for os.environ['KEY'] when the variable does not exist - by :user:jugmac00. (:issue:3456)

v4.24.1 (2025-01-21)

Misc - 4.24.1

- :issue:`3426`
v4.24.0 (2025-01-21)
</tr></table>

... (truncated)

Commits

• 7c3fae8 release 4.26.0
• 92d4ed3 Feat: free-threaded python support (#3526)
• 957f2f8 Fix for tox4 regression issue with setenv file and substitutions (#2435) (#3521)
• 5f07ba8 Test with Python 3.14 (#3533)
• 50e51eb Drop support for EOL Python 3.8 (#3527)
• 19126da Fix custom HelpFormatter for Python 3.14 (#3524)
• f082f80 [pre-commit.ci] pre-commit autoupdate (#3522)
• 51aac32 Fix using deprecated virtualenv option --wheel (#3528)
• b770ed5 Add colour to CI logs (#3525)
• 4a8e50e [pre-commit.ci] pre-commit autoupdate (#3520)
• Additional commits viewable in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot merge will merge this PR after your CI passes on it
• @dependabot squash and merge will squash and merge this PR after your CI passes on it
• @dependabot cancel merge will cancel a previously requested merge and block automerging
• @dependabot reopen will reopen this PR if it is closed
• @dependabot close will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually
• @dependabot show <dependency name> ignore conditions will show all of the ignore conditions of the specified dependency
• @dependabot ignore <dependency name> major version will close this group update PR and stop Dependabot creating any more for the specific dependency's major version (unless you unignore this specific dependency's major version or upgrade to it yourself)
• @dependabot ignore <dependency name> minor version will close this group update PR and stop Dependabot creating any more for the specific dependency's minor version (unless you unignore this specific dependency's minor version or upgrade to it yourself)
• @dependabot ignore <dependency name> will close this group update PR and stop Dependabot creating any more for the specific dependency (unless you unignore this specific dependency or upgrade to it yourself)
• @dependabot unignore <dependency name> will remove all of the ignore conditions of the specified dependency
• @dependabot unignore <dependency name> <ignore condition> will remove the ignore condition of the specified dependency and ignore conditions

[kyhau]

🎉 Snyk checks have passed. No issues have been found so far.

✅ security/snyk check is complete. No issues have been found. (View Details)