[3.2] Run Java versions validation against 3.2 stream

[gtroitsk]

Fix failures detected in #393

https://code.quarkus.redhat.com/?S=com.redhat.quarkus.platform%3A3.2 page should be used in validatePresenceOfJavaVersionSelect test to retrieve correct information about current supported Java versions

[rsvoboda]

Test that failed was public void validatePresenceOfJavaVersionSelect(TestInfo testInfo), this doesn't fix it, stream is already added in https://github.com/quarkus-qe/quarkus-startstop/pull/320/files

The failure is

Error:  Tests run: 7, Failures: 1, Errors: 0, Skipped: 1, Time elapsed: 20.264 s <<< FAILURE! - in io.quarkus.ts.startstop.CodeQuarkusSiteTest
Error:  validatePresenceOfJavaVersionSelect{TestInfo}  Time elapsed: 1.011 s  <<< FAILURE!
org.opentest4j.AssertionFailedError: Java 11 is missing in java version select! javaVersionText: 1721 ==> expected: <true> but was: <false>
	at io.quarkus.ts.startstop.CodeQuarkusSiteTest.validatePresenceOfJavaVersionSelect(CodeQuarkusSiteTest.java:105)"

You should amend + "?S=com.redhat.quarkus.platform%3A3.2" in the test otherwise you face side effects like in the CI runs.