Update tox requirement from ~=4.27 to ~=4.28 in the all-dependencies group

[dependabot]

Updates the requirements on tox to permit the latest version.
Updates tox to 4.28.0

Release notes

Sourced from tox's releases.

4.28.0

What's Changed

• [pre-commit.ci] pre-commit autoupdate by @​pre-commit-ci[bot] in tox-dev/tox#3548
• [docs] Document how to require a plugin by @​stephenfin in tox-dev/tox#3552
• [pre-commit.ci] pre-commit autoupdate by @​pre-commit-ci[bot] in tox-dev/tox#3554
• [pre-commit.ci] pre-commit autoupdate by @​pre-commit-ci[bot] in tox-dev/tox#3558
• Add [testenv] constraints option by @​stephenfin in tox-dev/tox#3556
• [pre-commit.ci] pre-commit autoupdate by @​pre-commit-ci[bot] in tox-dev/tox#3562
• Allow disabling plugins on a one-off by @​gaborbernat in tox-dev/tox#3560

Full Changelog: tox-dev/tox@4.27.0...4.28.0

Changelog

Sourced from tox's changelog.

v4.28.0 (2025-07-20)

Features - 4.28.0

- Added ``constraints`` to allow specifying constraints files for all dependencies. (:issue:`3350`)
- Allow disabling tox plugins via the ``TOX_DISABLED_EXTERNAL_PLUGINS`` environment variable - by :user:`gaborbernat`. (:issue:`3468`)
Improved Documentation - 4.28.0

• The min_version/minversion config option is deprecated in favor of the requires option. (:issue:3553)

v4.27.0 (2025-06-17)

Features - 4.27.0

- Add ``free_threaded`` flag to to ``"python"`` entries in json output of ``--result-json``. (:issue:`3534`)
Bugfixes - 4.27.0

• Fix dependency-group name normalization. (:issue:3539)
• Improves logging of environment variables by sorting them by key and redacting the values for the ones that are likely to contain secrets. (:issue:3542)

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

... (truncated)

Commits

• af94e62 release 4.28.0
• 55af14a Allow disabling plugins on a one-off (#3560)
• 57b5dc6 [pre-commit.ci] pre-commit autoupdate (#3562)
• e2ff114 Add [testenv] constraints option (#3556)
• 7138c38 [pre-commit.ci] pre-commit autoupdate (#3558)
• 3c4497c [pre-commit.ci] pre-commit autoupdate (#3554)
• 452c174 [docs] Document how to require a plugin (#3552)
• cb8e0fb [pre-commit.ci] pre-commit autoupdate (#3548)
• See full diff 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

[amazon-q-developer]

⏳ I'm reviewing this pull request for security vulnerabilities and code quality issues. I'll provide an update when I'm done

[kyhau]

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

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

[amazon-q-developer]

✅ I finished the code review, and didn't find any security or code quality issues.