build(deps-dev): update tox requirement from 4.49.0 to 4.49.1

[dependabot]

Updates the requirements on tox to permit the latest version.

Release notes

Sourced from tox's releases.

v4.49.1

What's Changed

• Update maintainers by @​rahuldevikar in tox-dev/tox#3868
• 🐛 fix(run): break deadlock in execution interrupt chain by @​gaborbernat in tox-dev/tox#3869

Full Changelog: tox-dev/tox@4.49.0...4.49.1

Changelog

Sourced from tox's changelog.

Bug fixes - 4.49.1

• Break deadlock in execution interrupt chain that caused ~18 flaky timeout failures across 9 tests on Windows/macOS CI
  • by :user:gaborbernat. (:issue:3869)

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v4.49.0 (2026-03-06)

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Features - 4.49.0

• Add {factor:label} substitution for TOML configs -- factor groups in product matrices and env_base factors can now be labeled with single-key dicts (e.g., {ecosystem = ["oci", "python"]}), enabling {factor:ecosystem} in any string value (descriptions, commands, etc.) to resolve to the active factor. Plain lists automatically get positional labels ({factor:0}, {factor:1}, ...) - by :user:gaborbernat. (:issue:3860) (:issue:3860)

Bug fixes - 4.49.0

• Fix --showconfig and --help-ini legacy flags raising AttributeError after config format options were added
  • by :user:rares985 (:issue:3866)

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v4.48.1 (2026-03-06)

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Bug fixes - 4.48.1

• Command-type configuration values like list_dependencies_command can now be referenced in TOML using the structured {replace = "ref"} syntax. The reference automatically extracts the command's argument list for compatibility with TOML's list[list[str]] structure - by :user:gaborbernat. (:issue:3830)

Improved documentation - 4.48.1

• Replace archived 31z4/tox Docker image recommendation with instructions for building your own image using the official Python base image and uv - by :user:rahuldevikar. (:issue:3855)

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v4.48.0 (2026-03-05)

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Features - 4.48.0

• Add --format flag (ini, json, toml) and -o/--output-file to the config command for machine-readable output with native types. JSON and TOML use the same key structure as tox.toml (env.<name>

... (truncated)

Commits

• 142b077 release 4.49.1
• e3876f3 🐛 fix(run): break deadlock in execution interrupt chain (#3869)
• 3aa8135 [pre-commit.ci] pre-commit autoupdate (#3872)
• 8536955 Update maintainers (#3868)
• See full diff in compare view

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