Postgres 17 support

[natenjoy]

Now that Postgres 17 has been released (https://www.postgresql.org/about/news/postgresql-17-released-2936/), could kubegres be upgraded to support Postgres 17? Spinning up a simple k3d cluster locally, I was able to run a kubegres cluster (all 3 pods ran and did not crash), but I didn't do any further testing.

[alex-arica]

I confirm that a new version will be released within the next 2 weeks, first week of October, with Postgres17 support.