No DBLink build for vertica v23.3.0

[roypaulin]

There is no dblink build for v23.3.0 and with Duane gone there is no one to maintain vertica/dblink. If we still want to support dblink in VerticaPyLab, we need to keep that repo up-to-date otherwise we need to remove it from VerticaPyLab.

[roypaulin]

@oualib what do we do?

[oualib]

@roypaulin do we close this one?

[roypaulin]

Not yet. We still have to create a new release on dblink. And we must also update vertica-install in order to actually be able to use dblink (not just install it), and also add a test case(I am thinking about mysql).