Update Postgres "Create Server..." default version from 10 to 11

[neelip]

Support for Version 10 is ending on November 10, 2022.

https://www.postgresql.org/support/versioning/

[AzCode-Bot]

This issue has become stale and is at risk of being closed. The community has 60 days to upvote the issue. If it receives 5 upvotes we will keep it open and take another look. If not, we will close it. To learn more about how we handle issues, please see our documentation.

Happy Coding!

[pamelafox]

Now I think it should be updated to version 14. That is what we're using for the official WebApp + DB template for Azure.