build(deps): bump msgpack from 1.2.2 to 1.2.3

[dependabot]

Bumps msgpack from 1.2.2 to 1.2.3.

Release notes

Sourced from msgpack's releases.

v1.2.3

What's Changed

• Fix memory leaks in the C extension when map key validation or container hooks fail. See GHSA-j586-36cw-2gc2.
• wheels: also build for pyodide using emscripten. by @​mr-c in msgpack/msgpack-python#732
• Support packing Python 3.15 frozentdict (PEP 814) by @​edgarrmondragon in msgpack/msgpack-python#738
• Reject negative array and map header sizes by @​jakezwang in msgpack/msgpack-python#742
• Bump the all-dependencies group across 1 directory with 2 updates by @​dependabot[bot] in msgpack/msgpack-python#741

New Contributors

• @​mr-c made their first contribution in msgpack/msgpack-python#732
• @​jakezwang made their first contribution in msgpack/msgpack-python#742

Full Changelog: msgpack/msgpack-python@v1.2.2...v1.2.3

Changelog

Sourced from msgpack's changelog.

1.2.3

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

Commits

• 742cb6d release v1.2.3
• 620b0eb Merge commit from fork
• 475c1b7 Bump the all-dependencies group across 1 directory with 2 updates (#741)
• 0014ca9 Reject negative array and map header sizes (#742)
• 7a63920 Support packing Python 3.15 frozentdict (PEP 814) (#738)
• 9f4909c wheels: also build for pyodide using emscripten. (#732)
• See full diff in compare view

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