Update cockroach-go module version

The new cockroach-go module adds a tenant scope argument
while generating client certificates for tenant servers
within the cockroach go repo. We need this new change in
order for the tests with example-orms to work correctly
with the upcoming changes for tenant scoped client certificates.
Without this change, the tenant tests will fail as the client
certificates generated through the cockroach-go modules will be
unable to authenticate correctly with the tenant server.

go.mod

@@ -3,11 +3,12 @@ module github.com/cockroachdb/examples-orms
 go 1.13
 
 require (
-	github.com/cockroachdb/cockroach-go/v2 v2.2.4
+	github.com/cockroachdb/cockroach-go/v2 v2.2.12
 	github.com/go-pg/pg/v10 v10.9.0
 	github.com/julienschmidt/httprouter v1.1.0
-	github.com/lib/pq v1.10.0
+	github.com/lib/pq v1.10.6
 	github.com/pkg/errors v0.9.1
-	gorm.io/driver/postgres v1.0.8
-	gorm.io/gorm v1.21.6
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gorm.io/driver/postgres v1.3.5
+	gorm.io/gorm v1.23.5
 )