Bump grpc from 1.72.0 to 1.73.0

[dependabot[bot]]

Bumps grpc from 1.72.0 to 1.73.0.

Release notes

Sourced from grpc's releases.

Release v1.73.0

This is release 1.73.0 (gradient) of gRPC Core.

For gRPC documentation, see grpc.io. For previous releases, see Releases.

This release contains refinements, improvements, and bug fixes, with highlights listed below.

Core

As of this version, gRPC on MacOS & iOS will utilize Abseil's synchronization features, aligning it with other platforms. Should you encounter any issues due to this update, you can disable it by enabling GPR_DISABLE_ABSEIL_SYNC. If you do this, please report any problems by filing a bug at https://github.com/grpc/grpc.

• [Dep] Update Protobuf to v31.0. (#39392)
• [Core] Added GPR_DISABLE_ABSEIL_SYNC. (#39562)
• [xds_override_host] pass through per-endpoint args when creating subchannels. (#39532)
• Expose GRPC_OPENSSL_CLEANUP_TIMEOUT to control shutdown grace period. (#39297)
• [URI] fix parsing of user_info in proxy settings. (#39004)
• [EventEngine] Fix busy loop in thread pool when shutting down. (#39258)
• [Dep] Added a flag to build with openssl instead of boringssl. (#39188)
• [EventEngine] Cleanup: EventEngine client, listener, and dns experiments are on by default on all platforms. (#39079)

C++

• [OpenCensus] Mark OpenCensus and dependent APIs as deprecated. (#39554)

Python

• [Python] Pin Cython to 3.1.1. (#39609)
• [Python] grpc_tools: make PythonGrpcGenerator handle dot . in proto paths the same way as native Generator/PyiGenerator. (#39586)

Ruby

• [Ruby] add remove_unused_artifacts to opt build. (#39593)

Release v1.73.0-pre2

This is a prerelease of gRPC Core 1.73.0 (gradient).

For gRPC documentation, see grpc.io. For previous releases, see Releases.

This prerelease contains refinements, improvements, and bug fixes.

Release v1.73.0-pre1

This is a prerelease of gRPC Core 1.73.0 (gradient).

For gRPC documentation, see grpc.io. For previous releases, see Releases.

... (truncated)

Commits

• 95dd243 [Release] Bump version to 1.73.0 (on v1.73.x branch) (#39787)
• 9f9728c [Release] Bump version to 1.73.0-pre2 (on v1.73.x branch) (#39721)
• 481fcfd [xDS] remove env var guards for gRFCs A81, A82, and A83 (#39711)
• ce0bd2d [Release] Bump version to 1.73.0-pre1 (on v1.73.x branch) (#39643)
• f71fac7 [Release] Bump core version to 48.0.0 for upcoming release (#39611)
• c8a7a35 [alpn] Inject ALPN Protocols from channel args (#39541)
• a58a5ff [subchannel] stop passing watcher a ref to itself (#39372)
• 64f89ce [Ruby] add remove_unused_artifacts to opt build (#39593)
• 5b9404f [EventEngine][iomgr] Re-land: Delete Executor (#39578)
• fd420b4 Fixes incorrect output directory issue[39583] (#39586)
• Additional commits viewable in compare view

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