v1.45.2

Bug Fixes

• xds: fix bugs in ring-hash load balancer picking subchannel behavior per gRFC. The bug may cause connection not failing over from TRANSIENT_FAILURE status. (#9085)
• xds: Protect xdstp processing with federation env var. If the xds server uses xdstp:// resource names it was possible for federation code paths to be entered even without enabling the experimental federation support. This is now fixed and it is safe for xds servers to use xdstp:// resource names. (#9190)

Behavior Changes

• xds: change ring_hash LB aggregation rule to better handle transient_failure channel status (#9084)

Dependencies

• Bump protobuf to 3.19.6
• bom: Exclude grpc-observability. The module does not exist in 1.45.x. Should be a noop (#9122)