Update tox requirement from ~=4.34.1 to ~=4.50.3

[dependabot]

Updates the requirements on tox to permit the latest version.

Release notes

Sourced from tox's releases.

v4.50.3

What's Changed

• 🐛 fix(pkg): distinguish free-threaded Python in wheel build env by @​gaborbernat in tox-dev/tox#3891

Full Changelog: tox-dev/tox@4.50.2...4.50.3

Changelog

Sourced from tox's changelog.

Bug fixes - 4.50.3

• Use separate .pkg environments for free-threaded Python targets by including the t suffix in the wheel build environment name (e.g., .pkg-cpython314t), preventing wheel tag mismatches when building for py314t - by :user:gaborbernat. (:issue:3314)

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v4.50.2 (2026-03-19)

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Bug fixes - 4.50.2

• Fix the sdist to include the missing docs/man/tox.1.rst file for building the manpage (:issue:3889)

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v4.50.1 (2026-03-19)

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Bug fixes - 4.50.1

• Detect and suggest normalized environment names when users specify dotted Python versions (e.g., py3.10-lint) that match existing environments with compact notation (e.g., py310-lint), preventing silent fallback to base [testenv] configuration - by :user:gaborbernat. (:issue:3877)

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v4.50.0 (2026-03-17)

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Features - 4.50.0

• Add interrupt_post_commands option to run cleanup commands even after SIGINT - by :user:gaborbernat. (:issue:3858)
• Add factor['NAME'] and env['VAR'] subscript syntax for conditional expressions, enabling checks of factors with non-identifier names like factor['3.14']. Add env_name variable to check the full environment name in conditions. (:issue:3880)

Bug fixes - 4.50.0

• Fix multiple manpage issues: remove duplicate header/author/copyright sections, set project in Sphinx config, and compile the manpage to troff format at wheel-build time instead of shipping raw RST source - by :user:gaborbernat. (:issue:3878)

Improved documentation - 4.50.0

... (truncated)

Commits

• 7283912 release 4.50.3
• 9672736 🐛 fix(pkg): distinguish free-threaded Python in wheel build env (#3891)
• 1662c61 release 4.50.2
• ef45bd8 fix(sdist): include docs/man/tox.1.rst (#3890)
• dcd9552 release 4.50.1
• a438b58 🐛 fix(env): suggest normalized env name for dotted Python versions (#3888)
• db1362d release 4.50.0
• 2d18e29 ✨ feat(config): support subscript syntax and env_name in conditionals (#3884)
• bf4e4e8 ✨ feat(run): add interrupt_post_commands for cleanup after Ctrl-C (#3882)
• fb1f6af [pre-commit.ci] pre-commit autoupdate (#3879)
• Additional commits viewable in compare view

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