Update tox requirement from >=4.30.3 to >=4.57.1

[dependabot]

Updates the requirements on tox to permit the latest version.

Release notes

Sourced from tox's releases.

v4.57.1

What's Changed

• Run sequentially for run-parallel -p 0 instead of at CPU count by @​chuenchen309 in tox-dev/tox#3989
• Do not let a lone quote in a set_env value swallow the marker by @​chuenchen309 in tox-dev/tox#3988

Full Changelog: tox-dev/tox@4.57.0...4.57.1

Changelog

Sourced from tox's changelog.

Bug fixes - 4.57.1

• Stop a lone quote in a set_env value (e.g. an apostrophe in can't) from swallowing the ; platform marker, which silently set the variable unconditionally with the marker text left in the value - by :user:chuenchen309. (:issue:3988)
• Make tox run-parallel -p 0 turn parallelism off and run sequentially, as the -p help ("zero is turn off") and the legacy command already promise, instead of running at the CPU count - by :user:chuenchen309. (:issue:3989)

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v4.57.0 (2026-07-17)

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Features - 4.57.0

• Support debug (Py_DEBUG) interpreters the way free-threaded builds are already handled. The py313d and py313td factors select a debug build, a base_python pointing at one matches those factors and conflicts with factors that lack the suffix, and a debug build gets its own d-tagged wheel build environment - by :user:chuenchen309. (:issue:3986)

Bug fixes - 4.57.0

• Keep the free-threaded t suffix when deriving the base python spec from a path, so a base_python pointing at a free-threaded interpreter matches py313t factors and conflicts with factors that lack the suffix - by :user:chuenchen309. (:issue:3986)

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v4.56.4 (2026-07-08)

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Bug fixes - 4.56.4

• Discover debug (Py_DEBUG) interpreters set as base_python, such as Debian's python3.13-dbg - the spec was misread as a machine named dbg and no interpreter matched. Requires python-discovery>=1.4.4 - by :user:gaborbernat. (:issue:3977)

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v4.56.3 (2026-07-08)

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Bug fixes - 4.56.3

• Stop double-closing the child pty file descriptor when running under a tty, which could race a parallel run that had reused the freed descriptor number and cause intermittent Bad file descriptor/Input/output error failures - by :user:apoorvdarshan. (:issue:3975)

... (truncated)

Commits

• e7e0cfa release 4.57.1
• e19069f Do not let a lone quote in a set_env value swallow the marker (#3988)
• a1f76cf Run sequentially for run-parallel -p 0 instead of at CPU count (#3989)
• 484c157 release 4.57.0
• eaf7b51 ✨ feat(python): match free-threaded and debug interpreter builds (#3986)
• 2ce4b59 📦 build: use test dependency group in internal envs (#3985)
• 9080a91 Replace prettier with mdformat and yamlfmt (#3984)
• 91ab2e3 build(deps): bump astral-sh/setup-uv from 8.3.1 to 8.3.2 (#3983)
• 4064a79 build(deps): bump astral-sh/setup-uv from 8.3.0 to 8.3.1 (#3982)
• 4a93491 [pre-commit.ci] pre-commit autoupdate (#3981)
• Additional commits viewable in compare view

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