Add port to database url

[igor-ritual]

blockscout requires the database_url to include the port number.

See here: https://github.com/blockscout/blockscout/blob/4cf94b389601c55dbcd4d97d572340728488a36a/apps/explorer/lib/explorer/repo/config_helper.ex#L40-L41

Add port number here:
https://github.com/kurtosis-tech/postgres-package/blob/a82017ad4f3ba547a38869bdbefbd83c0af625a3/main.star#L124C1-L125C1