Update test.css.core tests to Java 21

[vogella]

No description provided.

[laeubi]

@vogella please don't simply bump Java versions without any code changes, the BREE should only be incremented if it actually uses any new features as it often results in a ripple effect for consumers (not the case for tests but I think we should not do it there either "just in case".

Or is this connected to some particular issue to solve? Then you should mention it in the commit message.

[eclipse-platform-bot]

This pull request changes some projects for the first time in this development cycle.
Therefore the following files need a version increment:

tests/org.eclipse.e4.ui.tests.css.core/META-INF/MANIFEST.MF

Warning

🚧 This PR cannot be modified by maintainers because edits are disabled or it is created from an organization repository. To obtain the required changes apply the git patch manually as an additional commit.

Git patch

From a31929f687e9c3d1177e62a028ed8429f08fe991 Mon Sep 17 00:00:00 2001
From: Eclipse Platform Bot <[email protected]>
Date: Thu, 10 Jul 2025 08:48:28 +0000
Subject: [PATCH] Version bump(s) for 4.37 stream


diff --git a/tests/org.eclipse.e4.ui.tests.css.core/META-INF/MANIFEST.MF b/tests/org.eclipse.e4.ui.tests.css.core/META-INF/MANIFEST.MF
index 95a642165a..4b42edf477 100644
--- a/tests/org.eclipse.e4.ui.tests.css.core/META-INF/MANIFEST.MF
+++ b/tests/org.eclipse.e4.ui.tests.css.core/META-INF/MANIFEST.MF
@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: %Bundle-Name
 Bundle-SymbolicName: org.eclipse.e4.ui.tests.css.core
-Bundle-Version: 1.302.600.qualifier
+Bundle-Version: 1.302.700.qualifier
 Require-Bundle: org.eclipse.core.runtime,
  org.eclipse.swt,
  org.eclipse.e4.ui.css.core,
-- 
2.49.0

Further information are available in Common Build Issues - Missing version increments.

[vogella]

Yes I plan to use Java 21 features in the tests.

[laeubi]

Yes I plan to use Java 21 features in the tests.

The please add these changes to the PR to make it a more consistent change and one can see the benefits here.

[github-actions]

Test Results

 2 764 files   - 14   2 764 suites   - 14   1h 49m 41s ⏱️ + 16m 5s
 7 930 tests ± 0   7 702 ✅ ± 0  228 💤 ±0  0 ❌ ±0 
23 281 runs   - 64  22 538 ✅  - 61  743 💤  - 3  0 ❌ ±0 

Results for commit bc1268a. ± Comparison against base commit f41ea06.