Javadoc: PgChannel#exceptionHandler is a no-op (#1601) #1284

Job	Run time
Run tests (ubuntu-latest, PostgreSQL-11, 25)	4m 6s
Run tests (ubuntu-latest, PostgreSQL-9, 8)	4m 49s
Run tests (ubuntu-latest, PostgreSQL-11, 8)	4m 22s
Run tests (ubuntu-latest, MySQL-8.0, 25)	2m 18s
Run tests (ubuntu-latest, PostgreSQL-10, 8)	4m 43s
Run tests (ubuntu-latest, PostgreSQL-10, 25)	4m 37s
Run tests (ubuntu-latest, PostgreSQL-9, 25)	4m 42s
Run tests (ubuntu-latest, MySQL-5.7, 25)	1m 57s
Run tests (ubuntu-latest, MySQL-5.6, 25)	2m 11s
Run tests (ubuntu-latest, MySQL-8.0, 8)	2m 13s
Run tests (ubuntu-latest, MSSQL-2019-latest, 25)	1m 36s
Run tests (ubuntu-latest, MariaDB-10.4, 25)	2m 6s
Run tests (ubuntu-latest, DB2-11.5, 8)	6m 2s
Run tests (ubuntu-latest, MSSQL-2017-latest, 8)	1m 39s
Run tests (ubuntu-latest, MSSQL-2017-latest, 25)	1m 43s
Run tests (ubuntu-latest, SQL-templates, 25)	6m 44s
Run tests (ubuntu-latest, Oracle-23, 25)	2m 21s
Run tests (ubuntu-latest, MSSQL-2019-latest, 8)	1m 35s
Run tests (ubuntu-latest, MariaDB-10.4, 8)	2m 12s
Run tests (ubuntu-latest, MySQL-5.6, 8)	2m 16s
Run tests (ubuntu-latest, SQL-templates, 8)	6m 33s
Run tests (ubuntu-latest, MySQL-5.7, 8)	2m 4s
Deploy to OSSRH	1m 47s
	1h 14m 36s

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