Add Python 3.14 to CI test matrix#15
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The old version did not support downloading Python 3.14.
protobuf 6.x raises "Metaclasses with custom tp_new are not supported" on Python 3.14. Pin to 5.x which works correctly.
Ensures Python 3.14.3 is available in CI (3.14.2 had protobuf compatibility issues that were fixed in 3.14.3).
No longer needed since uv 0.10.0 installs Python 3.14.3, which fixed the "Metaclasses with custom tp_new" error with protobuf 6.x.
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Summary
.github/workflows/ci.ymlProgramming Language :: Python :: 3.14classifier inpyproject.tomlprotobuf<6via[tool.uv] constraint-dependencies(protobuf 6.x raisesMetaclasses with custom tp_new are not supportedon Python 3.14)uv.lock(protobuf 4.24.4 → 5.29.6)Test plan