Bump github.com/stretchr/testify in /exporter/googlecloudpubsubexporter

Bumps [github.com/stretchr/testify](https://github.com/stretchr/testify) from 1.8.0 to 1.10.0.
- [Release notes](https://github.com/stretchr/testify/releases)
- [Commits](stretchr/testify@v1.8.0...v1.10.0)

---
updated-dependencies:
- dependency-name: github.com/stretchr/testify
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

exporter/googlecloudpubsubexporter/go.mod

@@ -5,7 +5,7 @@ go 1.18
 require (
 	cloud.google.com/go/pubsub v1.25.1
 	github.com/google/uuid v1.3.0
-	github.com/stretchr/testify v1.8.0
+	github.com/stretchr/testify v1.10.0
 	go.opentelemetry.io/collector v0.60.1-0.20220923151520-96e9af35c002
 	go.opentelemetry.io/collector/pdata v0.60.1-0.20220923151520-96e9af35c002
 	go.uber.org/zap v1.23.0