Merge branch '3.3.x'

Closes gh-43626

Author: snicoll

Diff for: spring-boot-project/spring-boot-tools/spring-boot-maven-plugin/src/test/java/org/springframework/boot/maven/MavenBuildOutputTimestampTests.java

@@ -56,11 +56,6 @@ void shouldParseIso8601WithMilliseconds() {
 		assertThat(parse("2011-12-03T10:15:30.123Z")).isEqualTo(Instant.parse("2011-12-03T10:15:30.123Z"));
 	}
 
-	@Test
-	void shouldParseIso8601WithSeconds() {
-		assertThat(parse("2011-12-03T10:15:30Z")).isEqualTo(Instant.parse("2011-12-03T10:15:30.000Z"));
-	}
-
 	@Test
 	void shouldFailIfIso8601BeforeMin() {
 		assertThatIllegalArgumentException().isThrownBy(() -> parse("1970-01-01T00:00:00Z"))