Add test option for PostgreSQL 16 #1972

Job	Run time
Build Linux (Cabal, GHC 9.0.2)	29m 43s
Build Linux (Cabal, GHC 9.2.4)	22m 59s
Build aarch64 (Cabal, GHC 9.2.4)	5m 34s
Build MacOS (Nix)	46s
Build Linux (Stack)	3m 11s
Build Linux static (Nix)	2m 56s
Build MacOS (Stack)	4m 15s
Build Windows (Stack)	7m 41s
Get FreeBSD build from CirrusCI	6m 15s
Lint & check code style	2m 1s
Test memory (Nix)	3m 24s
Test (Nix)	9m 30s
Test PG 9.6 (Nix)	9m 16s
Test PG 10 (Nix)	6m 35s
Test PG 11 (Nix)	6m 44s
Test PG 12 (Nix)	7m 17s
Test PG 13 (Nix)	9m 50s
Test PG 14 (Nix)	6m 46s
Test PG 15 (Nix)	9m 39s
Test PG 16 (Nix)	6m 50s
Prepare release	0s
Release on GitHub	0s
Release on Docker Hub	0s
Release Arm Builds on Docker Hub	0s
Remove copied files from server	10s
	2h 41m 22s

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