Test failures like org.junit.ComparisonFailure: expected:<...etime: 7/5/05, 12:00[ ]AM> but was:<...etime: 7/5/05, 12:00[ ]AM>

On Gentoo with `Java 21` we get these test failures:
```
There were 4 failures:
1) testRendererForGroup(org.stringtemplate.v4.test.TestRenderers)
org.junit.ComparisonFailure: expected:<...etime: 7/5/05, 12:00[ ]AM> but was:<...etime: 7/5/05, 12:00[ ]AM>
at org.junit.Assert.assertEquals(Assert.java:117)
at org.junit.Assert.assertEquals(Assert.java:146)
at org.stringtemplate.v4.test.TestRenderers.testRendererForGroup(TestRenderers.java:82)
2) testRendererWithPredefinedFormat2(org.stringtemplate.v4.test.TestRenderers)
org.junit.ComparisonFailure: expected:<...uesday, July 5, 2005[ at 12:00:00 ]AM Pacific Daylight ...> but was:<...uesday, July 5, 2005[, 12:00:00 ]AM Pacific Daylight ...>
at org.junit.Assert.assertEquals(Assert.java:117)
at org.junit.Assert.assertEquals(Assert.java:146)
at org.stringtemplate.v4.test.TestRenderers.testRendererWithPredefinedFormat2(TestRenderers.java:131)
3) testRendererWithPredefinedFormat4(org.stringtemplate.v4.test.TestRenderers)
org.junit.ComparisonFailure: expected:< time: 12:00:00[ ]AM > but was:< time: 12:00:00[ ]AM >
at org.junit.Assert.assertEquals(Assert.java:117)
at org.junit.Assert.assertEquals(Assert.java:146)
at org.stringtemplate.v4.test.TestRenderers.testRendererWithPredefinedFormat4(TestRenderers.java:164)
4) testRendererWithPredefinedFormat(org.stringtemplate.v4.test.TestRenderers)
org.junit.ComparisonFailure: expected:<...etime: 7/5/05, 12:00[ ]AM > but was:<...etime: 7/5/05, 12:00[ ]AM >
at org.junit.Assert.assertEquals(Assert.java:117)
at org.junit.Assert.assertEquals(Assert.java:146)
at org.stringtemplate.v4.test.TestRenderers.testRendererWithPredefinedFormat(TestRenderers.java:111)

FAILURES!!!
Tests run: 636, Failures: 4
```