Reintroduce JRuby 9.4 to testing matrix #3288

Job	Run time
Lint	45s
Tests for Development and Demo	5m 56s
Test - rails_6.1 - Ruby 3.0 - PG 17	4m 46s
Test - rails_7.0 - Ruby 3.1 - PG 17	4m 44s
Test - rails_6.1 - Ruby 3.1 - PG 17	4m 36s
Test - rails_7.2 - Ruby 3.1 - PG 17	4m 30s
Test - rails_6.1 - Ruby 3.2 - PG 17	4m 21s
Test - rails_7.0 - Ruby 3.0 - PG 17	4m 35s
Test - rails_7.1 - Ruby 3.0 - PG 17	4m 26s
Test - rails_8.0 - Ruby 3.2 - PG 17	4m 26s
Test - rails_6.1 - Ruby 3.3 - PG 17	4m 36s
Test - rails_7.1 - Ruby 3.1 - PG 17	4m 37s
Test - rails_head - Ruby 3.3 - PG 17	4m 48s
Test - rails_head - Ruby 3.2 - PG 17	4m 32s
Test - rails_7.1 - Ruby 3.2 - PG 17	4m 45s
Test - rails_7.1 - Ruby 3.3 - PG 17	4m 43s
Test - rails_7.2 - Ruby 3.2 - PG 17	4m 34s
Test - rails_7.0 - Ruby 3.2 - PG 17	4m 30s
Test - rails_7.2 - Ruby jruby-9.4 - PG 17	1m 33s
Test - rails_8.0 - Ruby 3.3 - PG 17	4m 38s
Test - rails_7.1 - Ruby jruby-9.4 - PG 17	1m 35s
Test - rails_7.0 - Ruby jruby-9.4 - PG 17	1m 54s
Test - rails_7.2 - Ruby 3.3 - PG 17	4m 58s
Test - rails_7.0 - Ruby 3.3 - PG 17	4m 45s
Test - rails_7.2 - Ruby 3.3 - PG 10	4m 51s
Test - rails_8.0 - Ruby jruby-9.4 - PG 17	1m 21s
Test - rails_6.1 - Ruby jruby-9.4 - PG 17	1m 56s
Test - rails_head - Ruby jruby-9.4 - PG 17	1m 14s
	1h 48m 55s

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