Modernize federated_language dependency stacks#339
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This CL upgrades federated_language to drop Python 3.9 support, following the Python community's end-of-support (EOL) timeline, and relaxes over-constrained dependency specifications to avoid resolution collisions in downstream environments. Key changes: - Raised minimum Python requirements to `>=3.10` and stripped legacy `sys.version_info` isinstance Union-unpacking workarounds from `py_typecheck.py`. - Migrated all imports of `TypeGuard` from `typing_extensions` to Python 3.10+ native standard library `typing.TypeGuard`, allowing the complete removal of the `typing-extensions` dependency. - Relaxed dependency constraints on `attrs` (to `>=23.1,<27.0`) and `dm-tree` (to `>=0.1.8,<0.3.0`) in package configurations. - Aligned `protobuf` dependency boundaries with TensorFlow's upper limit (`protobuf>=5.29,<7.0`). - Fully cleaned up Python 3.9 toolchains (for which community support has ended), pip requirements compilers, matrices, lock files, and sync scripts across workspace Bazel configurations, GitHub Actions, and Copybara configurations. PiperOrigin-RevId: 917319954
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Modernize federated_language dependency stacks
This CL upgrades federated_language to drop Python 3.9 support, following the Python community's end-of-support (EOL) timeline, and relaxes over-constrained dependency specifications to avoid resolution collisions in downstream environments.
Key changes:
>=3.10and stripped legacysys.version_infoisinstance Union-unpacking workarounds frompy_typecheck.py.TypeGuardfromtyping_extensionsto Python 3.10+ native standard librarytyping.TypeGuard, allowing the complete removal of thetyping-extensionsdependency.attrs(to>=23.1,<27.0) anddm-tree(to>=0.1.8,<0.3.0) in package configurations.protobufdependency boundaries with TensorFlow's upper limit (protobuf>=5.29,<7.0).