Bump cloud.google.com/go/pubsub in /exporter/googlecloudpubsubexporter

Bumps [cloud.google.com/go/pubsub](https://github.com/googleapis/google-cloud-go) from 1.30.0 to 1.31.0.
- [Release notes](https://github.com/googleapis/google-cloud-go/releases)
- [Changelog](https://github.com/googleapis/google-cloud-go/blob/main/CHANGES.md)
- [Commits](googleapis/google-cloud-go@pubsub/v1.30.0...pubsub/v1.31.0)

---
updated-dependencies:
- dependency-name: cloud.google.com/go/pubsub
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

exporter/googlecloudpubsubexporter/go.mod

@@ -3,7 +3,7 @@ module github.com/open-telemetry/opentelemetry-collector-contrib/exporter/google
 go 1.19
 
 require (
-	cloud.google.com/go/pubsub v1.30.0
+	cloud.google.com/go/pubsub v1.31.0
 	github.com/google/uuid v1.3.0
 	github.com/stretchr/testify v1.8.3
 	go.opentelemetry.io/collector/component v0.78.2
@@ -17,10 +17,10 @@ require (
 )
 
 require (
-	cloud.google.com/go v0.110.0 // indirect
+	cloud.google.com/go v0.110.2 // indirect
 	cloud.google.com/go/compute v1.19.0 // indirect
 	cloud.google.com/go/compute/metadata v0.2.3 // indirect
-	cloud.google.com/go/iam v0.13.0 // indirect
+	cloud.google.com/go/iam v1.0.1 // indirect
 	github.com/cenkalti/backoff/v4 v4.2.1 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
@@ -29,7 +29,7 @@ require (
 	github.com/google/go-cmp v0.5.9 // indirect
 	github.com/google/s2a-go v0.1.4 // indirect
 	github.com/googleapis/enterprise-certificate-proxy v0.2.3 // indirect
-	github.com/googleapis/gax-go/v2 v2.8.0 // indirect
+	github.com/googleapis/gax-go/v2 v2.9.1 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/knadh/koanf v1.5.0 // indirect
 	github.com/mitchellh/copystructure v1.2.0 // indirect