Co-authored-by: Natalie <nat@metabase.com>

Co-authored-by: Jeff Bruemmer <jeff.bruemmer@gmail.com>

Co-authored-by: Natalie <nat@metabase.com>

Co-authored-by: Cal Herries <39073188+calherries@users.noreply.github.com>

* add instructions to convert key to der

* omit paragraph re: sslmode

See https://github.com/metabase/metabase/pull/23976#issuecomment-1191290882

* improved support for Google Cloud SQL

* upgrade `postgres-socket-factory` and add license overrides

* fix license check

Co-authored-by: Cam Saul <1455846+camsaul@users.noreply.github.com>