v42.3.1

What's Changed

• update release date to Oct 18 [SKIP-CI] by @davecramer in #2308
• [typo] typo in certdir/README.md by @snuyanzin in #2309
• Fix typo in TimestampUtils.java by @TeslaCN in #2314
• improv: Arrays in Object[] by @bokken in #2230
• improv: Use jre utf-8 decoding by @bokken in #2317
• remove check for negative pid in cancel request. Apparently pgbouncer can send one fixes Issue #2318 by @davecramer in #2319
• perf: improve performance of bytea string decoding by @bokken in #2320
• feat: intern/canonicalize common strings by @bokken in #2234
• move version to 42.3.0 [SKIP-CI] by @davecramer in #2322
• Remove references to JAVA 6 and 7 by @davecramer in #2312
• fix: numeric binary decode for even 10 thousands by @bokken in #2327
• fix: remove unused OptimizedUTF8Encoder by @bokken in #2329
• Release notes for 42.3.1 by @davecramer in #2330

Full Changelog: REL42.3.0...REL42.3.1