chore(python-deps): update dependency msgpack to v1.2.3 in all dependant actions

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
msgpack (changelog)	==1.2.2 → ==1.2.3

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Release Notes

msgpack/msgpack-python (msgpack)

v1.2.3

Compare Source

Release Date: 2026-09-29

• Fix memory leaks in the C extension when map key validation or container hooks fail.
  See GHSA-j586-36cw-2gc2.
• Fix use-after-free errors when cleaning up an incomplete or failed Unpacker.skip()
  after previously unpacking a nested object in the C extension.
• Raise ValueError in the C extension when switching between unpacking, skipping,
  header readers, or read_bytes() while an object is incomplete. Resume with the
  same method after feeding more data; unpack() and iteration remain interchangeable.
• Prevent reentrant unpacking, header reads, read_bytes(), and reinitialization
  of the same C Unpacker while unpacking is in progress.
• Reject negative sizes in Packer.pack_array_header() and Packer.pack_map_header(). #​742
• Support packing Python 3.15 frozendict objects. #​738
• Update Cython from 3.2.5 to 3.3.0. #​738
• Build wheels for Pyodide using Emscripten. #​732
• Update cibuildwheel to 4.2.1 and the QEMU setup action to 4.4.0. #​741

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (06d18d7) to head (35bd2bd).

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #1244   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            4         4           
  Lines          233       233           
  Branches        32        32           
=========================================
  Hits           233       233           

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[github-actions]

Test Results (ubuntu)

path	passed	subtotal
tests/test_bump_version_in_files.py	5	5
tests/test_create_unique_testpypi_version.py	7	7
tests/test_find_unreleased_changelog_items.py	6	6
tests/test_update_development_dependencies.py	13	13
TOTAL	31	31

Link to workflow run

[github-actions]

Test Results (macos)

path	passed	subtotal
tests/test_bump_version_in_files.py	5	5
tests/test_create_unique_testpypi_version.py	7	7
tests/test_find_unreleased_changelog_items.py	6	6
tests/test_update_development_dependencies.py	13	13
TOTAL	31	31

Link to workflow run

[github-actions]

Test Results (windows)

path	passed	subtotal
tests\test_bump_version_in_files.py	5	5
tests\test_create_unique_testpypi_version.py	7	7
tests\test_find_unreleased_changelog_items.py	6	6
tests\test_update_development_dependencies.py	13	13
TOTAL	31	31

Link to workflow run