Update tox requirement from <5,>4 to >=4.55.1,<5

[dependabot]

Updates the requirements on tox to permit the latest version.

Release notes

Sourced from tox's releases.

v4.55.1

What's Changed

• 🐛 fix(config): propagate overrides through config references by @​tales-aparecida in tox-dev/tox#3951

New Contributors

• @​tales-aparecida made their first contribution in tox-dev/tox#3951

Full Changelog: tox-dev/tox@4.55.0...4.55.1

Changelog

Sourced from tox's changelog.

Bug fixes - 4.55.1

• TOX_OVERRIDE (and -x/--override) now propagates through configuration references. Previously, overriding a base value that was later referenced via {[section]key} (ini) or {replace = "ref", of = [...]} (toml) was ignored because reference resolution read the raw file value, bypassing the override system - by :user:tales-aparecida. (:issue:3950) (:issue:3950)

---

v4.55.0 (2026-05-28)

---

Features - 4.55.0

• Automatically pass the TERMINFO environment variable to tox subprocesses if the output is a TTY. This variable is used by Ghostty to communicate terminal capabilities to programs. (:issue:3946)

Bug fixes - 4.55.0

• When the constraints configuration option is set, constrain_package_deps and use_frozen_constraints are now ignored. Previously, both the user-provided constraints file and the auto-generated constraints file were passed to pip during install_package_deps, which could cause resolver conflicts when the same package appeared in both files - by :user:gaborbernat. (:issue:3945) (:issue:3945)

---

v4.54.0 (2026-05-12)

---

Features - 4.54.0

• Declare the runtime dependencies of the tox.pytest plugin (pytest, devpi-process and pytest-mock) under a new testing extra, so plugin authors can pull them in via tox[testing] - by :user:gaborbernat. (:issue:3938, :issue:3940)

Bug fixes - 4.54.0

• Extend the generated TOML schema to cover every replace table form (env, ref, posargs, glob, if), including conditional replacements used inside commands. A guard test asserts the schema stays in sync with the loader implementation so future replace types cannot be added without a corresponding schema entry. (:issue:3939)

---

v4.53.1 (2026-05-02)

---

Bug fixes - 4.53.1

... (truncated)

Commits

• 7ebde0c release 4.55.1
• 9ac5479 🐛 fix(config): propagate overrides through config references (#3951)
• 28972a9 [pre-commit.ci] pre-commit autoupdate (#3949)
• 928b7f0 release 4.55.0
• a43427f 🐛 fix(pip): skip constrain_package_deps when constraints is set (#3948)
• 27b68b3 [pre-commit.ci] pre-commit autoupdate (#3947)
• 4e6627c feat: Also pass TERMINFO when in an interactive shell (#3946)
• 10c431c [pre-commit.ci] pre-commit autoupdate (#3943)
• c86e876 👷 ci(schemastore): sync fork before pushing branch (#3942)
• 1f1fcc7 release 4.54.0
• Additional commits viewable in compare view

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 45.13%. Comparing base (357e1cb) to head (a793250).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #299   +/-   ##
=======================================
  Coverage   45.13%   45.13%           
=======================================
  Files           9        9           
  Lines         853      853           
  Branches      172      172           
=======================================
  Hits          385      385           
  Misses        429      429           
  Partials       39       39           

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[dependabot]

Superseded by #307.