feat:added a postgres version check (maplibre#1427)

- [x] adds a postgres version check
- [x] added a testcase (using testcontainers) that the version is parsed
correctly

Resolves maplibre#1230 (I think at this point the PR can be considered unasigned
again, feel free to reject otherwise. Don't want to step on peoples toes
^^)
Resolves maplibre#1229 (by using the minumum supported postgres version for
postgis)

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Co-authored-by: Yuri Astrakhan <[email protected]>