bump dependencies and regenerated protobuf sources (#208)

* bump dependencies and regenerated protobuf sources
* move to later proto library for encode decode tests

go.mod

@@ -1,21 +1,12 @@
 module github.com/openzipkin/zipkin-go
 
 require (
- github.com/Shopify/sarama v1.19.0
- github.com/Shopify/toxiproxy v2.1.4+incompatible // indirect
- github.com/davecgh/go-spew v1.1.1 // indirect
- github.com/eapache/go-resiliency v1.1.0 // indirect
- github.com/eapache/go-xerial-snappy v0.0.0-20180814174437-776d5712da21 // indirect
- github.com/eapache/queue v1.1.0 // indirect
- github.com/golang/protobuf v1.4.2
- github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db // indirect
- github.com/onsi/ginkgo v1.7.0
- github.com/onsi/gomega v1.4.3
- github.com/pierrec/lz4 v1.0.2-0.20190131084431-473cd7ce01a1 // indirect
- github.com/rabbitmq/amqp091-go v0.0.0-20210812094702-b2a427eb7d17
- github.com/rcrowley/go-metrics v0.0.0-20181016184325-3113b8401b8a // indirect
- google.golang.org/grpc v1.30.0
- google.golang.org/protobuf v1.25.0
+ github.com/Shopify/sarama v1.30.0
+ github.com/onsi/ginkgo v1.16.5
+ github.com/onsi/gomega v1.16.0
+ github.com/rabbitmq/amqp091-go v1.1.0
+ google.golang.org/grpc v1.41.0
+ google.golang.org/protobuf v1.27.1
 )
 
-go 1.12
+go 1.14