possible SQL injection?

I might be wrong but from the looks of the code the NewPgSQLStore function is called from postgresStorageTypeProvider which looks like reads config. It probably isn't a real security issue since it would require access to the config for the database but the database name is not sanitized so SQL injection could happen.

go/v1beta1/storage/pgsqlstore.go
```
89 fmt.Sprintf("SELECT * FROM pg_catalog.pg_database WHERE datname='%s'", dbName))
```