deps(example-go): bump github.com/DataDog/dd-trace-go/v2 from 2.9.0 to 2.9.2 in /examples/single_service/src/go-project

deps(example-go): bump github.com/DataDog/dd-trace-go/v2 from 2.9.0 to 2.9.2 in /examples/single_service/src/go-project #753