go.mod: bump buf.build/gen/go/grpc-ecosystem/grpc-gateway/protocolbuffers/go from 1.31.0-20230822184712-f460f71081c1.1 to 1.31.0-20230926202251-048ae6ff94ca.1

go.mod: bump buf.build/gen/go/grpc-ecosystem/grpc-gateway/protocolbuffers/go from 1.31.0-20230822184712-f460f71081c1.1 to 1.31.0-20230926202251-048ae6ff94ca.1 #1075