build(deps): update mpi4py requirement from >=3.1.4 to >=4.1.1

[dependabot]

Updates the requirements on mpi4py to permit the latest version.

Release notes

Sourced from mpi4py's releases.

4.1.1

• Add MPIABI-aware import hook support.

• Support MPI.ERR_ERRHANDLER with Open MPI.

• Fix Windows build issues with Intel MPI 2021.16.

• Minor fixes and improvements to typing stubs.

• Minor fixes to documentation.

• Publish Python 3.8-3.14 and PyPy 3.11 wheels.

• PyPy 3.10 (EOL) wheels are no longer published.

Changelog

Sourced from mpi4py's changelog.

Release 4.1.1 [2025-10-10]

• Add MPIABI-aware import hook support.

• Support MPI.ERR_ERRHANDLER with Open MPI.

• Fix Windows build issues with Intel MPI 2021.16.

• Minor fixes and improvements to typing stubs.

• Minor fixes to documentation.

• Publish Python 3.8-3.14 and PyPy 3.11 wheels.

• PyPy 3.10 (EOL) wheels are no longer published.

Release 4.1.0 [2025-06-25]

• New features:

  • Publish binary wheel packages on PyPI_ with support for multiple operating systems (Linux, macOS, Windows), processor architectures (AMD64, ARM64), MPI implementations (MPICH, Open MPI, and their ABI-compatible derivatives), and Python implementations (CPython, PyPy).

    .. _PyPI: https://pypi.org/project/mpi4py/#files

  • Add support for the MPI 5.0 standard.

    • MPI handle serialization with integral values.
    • Fixed-size Fortran LOGICAL datatypes.
    • Query ABI version/info and Fortran ABI info.

  • MPI.Datatype.Create_contiguous now uses BigMPI_'s approach when using MPI implementations that do not yet support the MPI 4.0 large-count APIs.

  .. _BigMPI: https://doi.org/10.1109/ExaMPI.2014.5

  • Add support for MPI.FLOAT16_T and MPI.BFLOAT16_T datatypes. These datatypes are not yet standard but available as extensions in MPI implementations.

  • Add MPI.Status.tomemory to expose the status contents as a memoryview object.

... (truncated)

Commits

• 5e2fbc6 Bump version number to 4.1.1
• fe12197 chore: Update changelog
• be8fab3 docs: Rephrase outdated comments about the MPI ABI
• 48453f1 Circle CI: Add build for Python 3.14
• 4072e66 test: Set COVERAGE_CORE=ctrace for coverage.py
• 571de41 build: Fix use of CYTHON_LIMITED_API and Py_LIMITED_API
• 4baf984 build(deps): Require Cython >= 3.0.1
• 0b0c646 lint: pre-commit autoupdate
• ab647fe test: Workaround failure due to open-mpi/ompi@main still at MPI 3.1
• 0f1d036 build: Fix #undef CPP directive after warning from MSVC
• Additional commits viewable in compare view

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