Update dependency org.postgresql:postgresql to v42.3.6

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.postgresql:postgresql (source)	42.3.5 -> 42.3.6

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Release Notes

pgjdbc/pgjdbc

### [`v42.3.6`](https://togithub.com/pgjdbc/pgjdbc/blob/HEAD/CHANGELOG.md#​4236-2022-05-24-085227--0400) ##### Changed ##### Added ##### Fixed - fix: close refcursors when underlying cursor==null instead of relying on defaultRowFetchSize [PR #​2377](https://togithub.com/pgjdbc/pgjdbc/pull/2377)

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