update PostgreSQL version(s) in test matrix #210

Job	Run time
diKTat	17s
Java 17-temurin w/ PostgreSQL 15.4	1m 15s
Java 17-temurin w/ PostgreSQL 14.9	1m 26s
Java 17-temurin w/ PostgreSQL 13.12	1m 38s
Java 17-temurin w/ PostgreSQL 12.16	1m 24s
Java 17-temurin w/ PostgreSQL 11.21-bullseye	1m 28s
Java 17-zulu w/ PostgreSQL 15.4	1m 44s
Java 17-zulu w/ PostgreSQL 14.9	1m 33s
Java 17-zulu w/ PostgreSQL 13.12	1m 32s
Java 17-zulu w/ PostgreSQL 12.16	1m 37s
Java 17-zulu w/ PostgreSQL 11.21-bullseye	1m 40s
Java 21-temurin w/ PostgreSQL 15.4	1m 40s
Java 21-temurin w/ PostgreSQL 14.9	1m 41s
Java 21-temurin w/ PostgreSQL 13.12	1m 34s
Java 21-temurin w/ PostgreSQL 12.16	1m 33s
Java 21-temurin w/ PostgreSQL 11.21-bullseye	1m 38s
Java 21-zulu w/ PostgreSQL 15.4	1m 25s
Java 21-zulu w/ PostgreSQL 14.9	1m 51s
Java 21-zulu w/ PostgreSQL 13.12	1m 33s
Java 21-zulu w/ PostgreSQL 12.16	1m 45s
Java 21-zulu w/ PostgreSQL 11.21-bullseye	1m 39s
	31m 53s

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