Bump pip from 25.3 to 26.1.2

[dependabot]

Bumps pip from 25.3 to 26.1.2.

Changelog

Sourced from pip's changelog.

26.1.2 (2026-05-31)

Bug Fixes

• Reject console_scripts and gui_scripts entry points whose name would install a script outside the scripts directory. ([#14000](https://github.com/pypa/pip/issues/14000) <https://github.com/pypa/pip/issues/14000>_)
• Fix installation incorrectly failing when the target path contains a doubled slash, such as with pip install --root //.... ([#14001](https://github.com/pypa/pip/issues/14001) <https://github.com/pypa/pip/issues/14001>_)
• Send a consistent Accept-Encoding header to avoid a spurious Cache entry deserialization failed warning. ([#14012](https://github.com/pypa/pip/issues/14012) <https://github.com/pypa/pip/issues/14012>_)

26.1.1 (2026-05-04)

Bug Fixes

• Fix issue where uninstallation left behind empty directories. Revert the removal of the adjacent __pycache__ directory when a .py file is removed. ([#13973](https://github.com/pypa/pip/issues/13973) <https://github.com/pypa/pip/issues/13973>_)

26.1 (2026-04-26)

Deprecations and Removals

• Drop support for Python 3.9. ([#13795](https://github.com/pypa/pip/issues/13795) <https://github.com/pypa/pip/issues/13795>_)

Features

• Add experimental support to read requirements from standardized pylock.toml files (-r pylock.toml). ([#13876](https://github.com/pypa/pip/issues/13876) <https://github.com/pypa/pip/issues/13876>_)
• Allow --uploaded-prior-to to accept a duration in days (e.g., P3D for 3 days ago). ([#13674](https://github.com/pypa/pip/issues/13674) <https://github.com/pypa/pip/issues/13674>_)

Enhancements

• Speed up dependency resolution when there are complex conflicts. ([#13859](https://github.com/pypa/pip/issues/13859) <https://github.com/pypa/pip/issues/13859>_)
• Reduce memory usage when resolving large dependency trees. ([#13843](https://github.com/pypa/pip/issues/13843) <https://github.com/pypa/pip/issues/13843>_)
• Emit a deprecation warning when pip imports an unexpected module after installation of a distribution has started. ([#13912](https://github.com/pypa/pip/issues/13912) <https://github.com/pypa/pip/issues/13912>_)
• Allow URL constraints to apply to requirements with extras. ([#12018](https://github.com/pypa/pip/issues/12018) <https://github.com/pypa/pip/issues/12018>_)
• Allow unpinned requirements to use hashes from constraints. Constraints like {name}=={version} --hash=... feeds into hash verification for a corresponding requirement. ([#9243](https://github.com/pypa/pip/issues/9243) <https://github.com/pypa/pip/issues/9243>_)
• Improve conflict reports that involve direct URLs. ([#13932](https://github.com/pypa/pip/issues/13932) <https://github.com/pypa/pip/issues/13932>_)
• Show all errors instead of first error for faulty dependency_groups definitions. ([#13917](https://github.com/pypa/pip/issues/13917) <https://github.com/pypa/pip/issues/13917>_)

... (truncated)

Commits

• 31d7d16 Bump for release
• 79f348c Update AUTHORS.txt
• 237a925 Merge pull request #14001 from notatallshaw/fix-is-within-directory
• 34d0285 Merge pull request #14006 from laymonage/fix-requirements_from_scripts-space-...
• 09d3e07 Merge pull request #14012 from notatallshaw/stable-accept-encoding
• fa7854f Use is_within_directory for entry point check
• d01b46c NEWS ENTRY
• 7ff8bdd Fix is_within_directory for doubled-slash roots
• 7ea3466 NEWS ENTRY
• 85673ea Fix Accept-Encoding to gzip, deflate
• Additional commits viewable in compare view

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