[pip] Update simplejson requirement from ~=4.0.1 to ~=4.1.0

[dependabot]

Updates the requirements on simplejson to permit the latest version.

Release notes

Sourced from simplejson's releases.

v4.1.0

What's Changed

• Accelerate indented encoding in the C extension; release 4.1.0 by @​etrepum in simplejson/simplejson#376

Full Changelog: simplejson/simplejson@v4.0.1...v4.1.0

Changelog

Sourced from simplejson's changelog.

Version 4.1.0 released 2026-04-22

• The C extension now accelerates encoding when indent= is set. Previously the encoder fell back to the pure-Python implementation whenever a non-None indent was passed; now the C encoder emits the newline-plus-indent prefix, the level-aware item separator, and the closing indent directly. A representative nested-dict workload benchmarks about 4-5x faster end-to-end, and the indent=0 and empty-container edge cases continue to match the Python output byte-for-byte.

• The C extension now emits PEP 678 exc.add_note() annotations on serialization failures, matching the pure-Python encoder. A chained error on {'a': [1, object(), 3]} produces the same three notes (when serializing object object, when serializing list item 1, when serializing dict item 'a') whether the speedups are loaded or not, so the add_note assertions in test_errors.py no longer need indent=2 to force the Python path.

Version 4.0.1 released 2026-04-18

• Skip uploading Pyodide/wasm wheels to PyPI, which rejects them with "unsupported platform tag 'pyodide_2024_0_wasm32'". The wheels are still built in CI and preserved as workflow artifacts. simplejson/simplejson#375

Version 4.0.0 released 2026-04-18

• simplejson 4 requires Python 2.7 or Python 3.8+. Older Python versions (2.5, 2.6, 3.0-3.7) are no longer supported. pip will not install simplejson 4 on unsupported versions.

• The C extension now uses heap types and per-module state instead of static types and global state. This is required for free-threading support and sub-interpreter isolation. The Python-level API is unchanged.

• Full support for Python 3.13+ free-threading (PEP 703). The C extension is now safe to use with the GIL disabled (python3.14t):

  • Converted all static types to heap types with per-module state
  • Added per-object critical sections to scanner and encoder
  • Added free-threading-safe dict operations for Python 3.13+
  • Unified per-module state management and templated parser simplejson/simplejson#363 simplejson/simplejson#364 simplejson/simplejson#365 simplejson/simplejson#367 simplejson/simplejson#369

• Numerous C extension memory safety fixes:

... (truncated)

Commits

• 0fd3185 Accelerate indented encoding in the C extension; release 4.1.0 (#376)
• See full diff in compare view

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