Bump cloud.google.com/go/pubsub from 1.3.1 to 1.8.3

Bumps [cloud.google.com/go/pubsub](https://github.com/googleapis/google-cloud-go) from 1.3.1 to 1.8.3.
- [Release notes](https://github.com/googleapis/google-cloud-go/releases)
- [Changelog](https://github.com/googleapis/google-cloud-go/blob/master/CHANGES.md)
- [Commits](googleapis/google-cloud-go@pubsub/v1.3.1...pubsub/v1.8.3)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

go.mod

@@ -3,9 +3,9 @@ module github.com/NYTimes/gizmo
 go 1.12
 
 require (
-	cloud.google.com/go v0.57.0
+	cloud.google.com/go v0.71.0
 	cloud.google.com/go/logging v1.0.0
-	cloud.google.com/go/pubsub v1.3.1
+	cloud.google.com/go/pubsub v1.8.3
 	contrib.go.opencensus.io/exporter/stackdriver v0.13.1
 	github.com/DataDog/datadog-go v3.4.1+incompatible // indirect
 	github.com/DataDog/opencensus-go-exporter-datadog v0.0.0-20191210083620-6965a1cfed68
@@ -14,8 +14,8 @@ require (
 	github.com/aws/aws-sdk-go v1.31.3
 	github.com/bradfitz/gomemcache v0.0.0-20180710155616-bc664df96737
 	github.com/go-kit/kit v0.9.0
-	github.com/golang/protobuf v1.4.2
-	github.com/google/go-cmp v0.4.1
+	github.com/golang/protobuf v1.4.3
+	github.com/google/go-cmp v0.5.2
 	github.com/gorilla/context v1.1.1
 	github.com/gorilla/handlers v1.4.2
 	github.com/gorilla/mux v1.7.4
@@ -27,11 +27,11 @@ require (
 	github.com/prometheus/client_golang v0.9.4
 	github.com/sirupsen/logrus v1.6.0
 	github.com/tinylib/msgp v1.1.2 // indirect
-	go.opencensus.io v0.22.3
-	golang.org/x/net v0.0.0-20200501053045-e0ff5e5a1de5
-	golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d
-	google.golang.org/api v0.25.0
-	google.golang.org/genproto v0.0.0-20200430143042-b979b6f78d84
-	google.golang.org/grpc v1.29.1
+	go.opencensus.io v0.22.5
+	golang.org/x/net v0.0.0-20201026091529-146b70c837a4
+	golang.org/x/oauth2 v0.0.0-20200902213428-5d25da1a8d43
+	google.golang.org/api v0.35.0
+	google.golang.org/genproto v0.0.0-20201109203340-2640f1f9cdfb
+	google.golang.org/grpc v1.33.2
 	gopkg.in/DataDog/dd-trace-go.v1 v1.22.0 // indirect
 )