Bump flit from 3.12.0 to 4.1.0 in /CI

[dependabot]

Bumps flit from 3.12.0 to 4.1.0.

Changelog

Sourced from flit's changelog.

Release history

Version 4.1

• License expressions with named exceptions, the WITH syntax, are accepted (:ghpull:809).
• flit init allows dotted module names, for a component of a namespace package (:ghissue:822).
• Fix line endings in .cmd script wrappers on Windows (:ghpull:824).

Version 4.0.3

• Fix built wheels being created with overly restrictive 0600 permissions instead of the normal, world-readable 0644 (:ghpull:806).

Version 4.0.2

• Fix invalid metadata files with Import-Name (:ghissue:813).

Version 4.0.1

No changes, but a new tag to trigger an upload to PyPI now that twine will accept it.

Version 4.0

This version contains breaking changes, but most projects which are already using the [project] table for metadata shouldn't be affected, and can simply change the flit_core <4 constraint to <5.

• The [tool.flit.metadata] table is no longer used for project metadata (:ghpull:771). Use the newer :ref:[project] table <pyproject_toml_project> instead (or if that is not possible, build with flit_core <4).
• :ref:build_cmd and :ref:publish_cmd no longer include files in the sdist based on what is committed in git or Mercurial (:ghpull:772). These commands now build packages more like Flit does when called as a backend by e.g. python -m build. Specify :ref:sdist include & exclude patterns <pyproject_toml_sdist> instead (Flit can help to generate these), or pass the --use-vcs option to get the old behaviour back.
• flit_core now requires Python 3.8 or above (:ghpull:738)
• The --setup-py option to generate sdists containing a setup.py file is no longer available (:ghpull:776).
• Making typing stubs packages with a -stubs suffix will now work (:ghpull:742).

... (truncated)

Commits

• 75b1c90 Merge pull request #826 from pypa/prepare-4.1
• b5ad0d7 Add release note about PR #824
• 9fb48c1 Bump version: 4.0.2 → 4.1.0
• a4ea331 Prepare release notes for 4.1
• 337c499 Merge pull request #824 from r3wretrhy/fix-win-cmd-crlf
• 04cfa08 Merge pull request #825 from hxperl/docs-dynamic-fields
• 33be607 doc: list all four fields accepted in project.dynamic
• d538cb4 install: keep explicit CRLF in Windows .cmd wrappers
• 3c92604 Merge pull request #809 from yangfan-yf-yf/fix/spdx-with-exceptions
• 33a7a39 Clarify SPDX WITH version requirement and error message
• Additional commits viewable in compare view