Update dependency org.postgresql:postgresql to v42.3.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.postgresql:postgresql (source)	42.3.0 -> 42.3.1

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Release Notes

pgjdbc/pgjdbc

v42.3.1

Changed

• improv: Arrays in Object[] PR 2330 when an Object[] contains other arrays, treat as though it were a
  multi-dimensional array the one exception is byte[], which is not supported.
• improv: Use jre utf-8 decoding PR 2317 Remove use of custom utf-8 decoding.
• perf: improve performance of bytea string decoding PR 2320
  improve the parsing of bytea hex encoded string by making a lookup table for each of the valid ascii code points to the 4 bit numeric value
• feat: intern/canonicalize common strings PR 2234

Added

Fixed

• numeric binary decode for even 10 thousands PR #​2327 fixes Issue 2326
  binary numeric values which represented integers multiples of 10,000 from 10,000-9,990,000 were not decoded correctly
• [typo] typo in certdir/README.md PR #​2309 certificatess => certificates
• [typo] typo in TimestampUtils.java PR #​2314 Change Greagorian to Gregorian.
• remove check for negative pid in cancel request. Apparently pgbouncer can send one fixes Issue 2317 PR #​2319

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Configuration

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[coveralls]

Pull Request Test Coverage Report for Build #721

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 97.605%

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Totals
Change from base Build #719:	0.0%
Covered Lines:	652
Relevant Lines:	668

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💛 - Coveralls