Fix MethodDescriptor lookup in ManualGrpcSecurityMetadataSource for gRPC 1.75.0+#1190

danielocallaghan wants to merge 1 commit intogrpc-ecosystem:mastergrpc-ecosystem/grpc-spring:masterfrom

danielocallaghan:fix/method-descriptor-lookup-grpc-1.75danielocallaghan/grpc-spring:fix/method-descriptor-lookup-grpc-1.75Copy head branch name to clipboard