build(deps): bump google.golang.org/grpc from 1.70.0 to 1.74.0 in /examples

[dependabot]

Bumps google.golang.org/grpc from 1.70.0 to 1.74.0.

Release notes

Sourced from google.golang.org/grpc's releases.

Release 1.73.0

New Features

• balancer/ringhash: move LB policy from xds/internal to exported path to facilitate use without xds (#8249)
• xds: enable least request LB policy by default. It can be disabled by setting GRPC_EXPERIMENTAL_ENABLE_LEAST_REQUEST=false in your environment. (#8253)
• grpc: add a CallAuthority Call Option that can be used to overwrite the http :authority header on per-RPC basis. (#8068)
• stats/opentelemetry: add trace event for name resolution delay. (#8074)
• health: added List method to gRPC Health service. (#8155)
  • Special Thanks: @​marcoshuck
• ringhash: implement features from gRFC A76. (#8159)
• xds: add functionality to support SPIFFE Bundle Maps as roots of trust in XDS which can be enabled by setting GRPC_EXPERIMENTAL_XDS_MTLS_SPIFFE=true. (#8167, #8180, #8229, #8343)

Bug Fixes

• xds: locality ID metric label is changed to make it consistent with gRFC A78. (#8256)
• client: fail RPCs on the client when using extremely short contexts that expire before the grpc-timeout header is created. (#8312)
• server: non-positive grpc-timeout header values are now rejected. This is consistent with the gRPC protocol spec. (#8290)
  • Special Thanks: @​evanj
• xds: fix reported error string when LRS load reporting interval is invalid. (#8224)
  • Special Thanks: @​alingse

Performance Improvements

• credentials/alts: improve read performance by optimizing buffer copies and allocations. (#8271)
• server: improve performance of RPC handling by avoid a status proto copy (#8282)
  • Special Thanks: @​evanj

Documentation

• examples/features/opentelemetry: modify example to demonstrate tracing using OpenTelemtry plugin. (#8056)

Release 1.72.2

Bug Fixes

• client: restore support for NO_PROXY environment variable when connecting to locally-resolved addresses (case 2 from gRFC A1). (#8329)
• balancer/least_request: fix panic on resolver errors. (#8333)

Release 1.72.1

Bug Fixes

• client: HTTP Proxy connections are no longer attempted for addresses with non-TCP network types. (#8215)
• client: Fix bug that causes RPCs to fail with status INTERNAL instead of CANCELLED or DEADLINE_EXCEEDED when receiving a RST_STREAM frame in the middle of the gRPC message. (#8289)

Release 1.72.0

Dependencies

• Minimum supported Go version is now 1.23 (#8108)

API Changes

• resolver: add experimental AddressMapV2 with generics to ultimately replace AddressMap. Deprecate AddressMap for deletion (#8187)
• resolver: convert EndpointMap in place to use generics (#8189)

... (truncated)

Commits

• 406c2bf transport: release mutex before returning on expired deadlines in server stre...
• 20ef77a xds: give up pool lock before closing xdsclient channel (#8445)
• 2f9bb38 xdsclient: relay marshalled bytes of complete resource proto to decoders (#8422)
• fa3ec85 xds: Avoid error logs when setting fallback bootstrap config (#8419)
• d307d75 xdsclient: preserve original bytes for decoding when the resource is wrapped ...
• b34f845 server: allow 0s grpc-timeout header values, as java is known to be able to s...
• 1787f94 xdsclient: export genericResourceTypeDecoder (#8406)
• 15299cc xdsclient: make a function to return the supported resource type implementati...
• 20bd1e7 grpc: revert #8278: Fix cardinality violations in non-server streaming RPCs (...
• bdbe6a2 examples/opentelemetry: demonstrate enabling experimental metrics (#8388)
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Superseded by #49.