chore(deps): bump pip from 25.3 to 26.0 in /requirements in the pip group across 1 directory

[dependabot]

Bumps the pip group with 1 update in the /requirements directory: pip.

Updates pip from 25.3 to 26.0

Changelog

Sourced from pip's changelog.

26.0 (2026-01-30)

Deprecations and Removals

• Remove support for non-bare project names in egg fragments. Affected users should use the Direct URL requirement syntax <https://packaging.python.org/en/latest/specifications/version-specifiers/#direct-references>. ([#13157](https://github.com/pypa/pip/issues/13157) <https://github.com/pypa/pip/issues/13157>)

Features

• Display pip's command-line help in colour, if possible. ([#12134](https://github.com/pypa/pip/issues/12134) <https://github.com/pypa/pip/issues/12134>_)

• Support installing dependencies declared with inline script metadata (:pep:723) with --requirements-from-script. ([#12891](https://github.com/pypa/pip/issues/12891) <https://github.com/pypa/pip/issues/12891>_)

• Add --all-releases and --only-final options to control pre-release and final release selection during package installation. ([#13221](https://github.com/pypa/pip/issues/13221) <https://github.com/pypa/pip/issues/13221>_)

• Add --uploaded-prior-to option to only consider packages uploaded prior to a given datetime when the upload-time field is available from a remote index. ([#13625](https://github.com/pypa/pip/issues/13625) <https://github.com/pypa/pip/issues/13625>_)

• Add --use-feature inprocess-build-deps to request that build dependencies are installed within the same pip install process. This new mechanism is faster, supports --no-clean and --no-cache-dir reliably, and supports prompting for authentication.

  Enabling this feature will also enable --use-feature build-constraints. This feature will become the default in a future pip version. ([#9081](https://github.com/pypa/pip/issues/9081) <https://github.com/pypa/pip/issues/9081>_)

• pip cache purge and pip cache remove now clean up empty directories and legacy files left by older pip versions. ([#9058](https://github.com/pypa/pip/issues/9058) <https://github.com/pypa/pip/issues/9058>_)

Bug Fixes

• Fix selecting pre-release versions when only pre-releases match. For example, package>1.0 with versions 1.0, 2.0rc1 now installs 2.0rc1 instead of failing. ([#13746](https://github.com/pypa/pip/issues/13746) <https://github.com/pypa/pip/issues/13746>_)
• Revisions in version control URLs now must be percent-encoded. For example, use git+https://example.com/repo.git@issue%231 to specify the branch issue#1. If you previously used a branch name containing a % character in a version control URL, you now need to replace it with %25 to ensure correct percent-encoding. ([#13407](https://github.com/pypa/pip/issues/13407) <https://github.com/pypa/pip/issues/13407>_)
• Preserve original casing when a path is displayed. ([#6823](https://github.com/pypa/pip/issues/6823) <https://github.com/pypa/pip/issues/6823>_)
• Fix bash completion when the $IFS variable has been modified from its default. ([#13555](https://github.com/pypa/pip/issues/13555) <https://github.com/pypa/pip/issues/13555>_)
• Precompute Python requirements on each candidate, reducing time of long resolutions. ([#13656](https://github.com/pypa/pip/issues/13656) <https://github.com/pypa/pip/issues/13656>_)
• Skip redundant work converting version objects to strings when using the importlib.metadata backend. ([#13660](https://github.com/pypa/pip/issues/13660) <https://github.com/pypa/pip/issues/13660>_)
• Fix pip index versions to honor only-binary/no-binary options. ([#13682](https://github.com/pypa/pip/issues/13682) <https://github.com/pypa/pip/issues/13682>_)
• Fix fallthrough logic for options, allowing overriding global options with defaults from user config. ([#13703](https://github.com/pypa/pip/issues/13703) <https://github.com/pypa/pip/issues/13703>_)
• Use a path-segment prefix comparison, not char-by-char. ([#13777](https://github.com/pypa/pip/issues/13777) <https://github.com/pypa/pip/issues/13777>_)

Vendored Libraries

... (truncated)

Commits

• 2f4d4a8 Merge pull request #13779 from notatallshaw/fix-26.0-news
• 04307a4 fix 26.0 news
• 6ec7b0a Merge pull request #13775 from notatallshaw/release/26.0
• 4104356 Bump for release
• 58be883 Update AUTHORS.txt
• 66f2dec Merge pull request #13778 from ichard26/docs/groups
• 0214103 doc: Re-expose package selection group options
• fdbe762 Install pip within docs Nox sessions
• 8e227a9 Merge pull request #13777 from sethmlarson/commonpath
• f5315ad Merge pull request #13776 from ichard26/docs/versionadded
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[dependabot]

Looks like pip is no longer updatable, so this is no longer needed.