Move bundles to Java 21

[akurtakov]

They already depend on bundles that have BREE Java 21.

[github-actions]

Test Results

 1 953 files   1 953 suites   1h 21m 24s ⏱️
 4 745 tests  4 721 ✅  24 💤 0 ❌
14 235 runs  14 053 ✅ 182 💤 0 ❌

Results for commit 39ca98b.

♻️ This comment has been updated with latest results.

[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:

ua/org.eclipse.tips.feature/feature.xml

An additional commit containing all the necessary changes was pushed to the top of this PR's branch. To obtain these changes (for example if you want to push more changes) either fetch from your fork or apply the git patch.

Git patch

From 2b661b6b46a09f3baf16336c94dd97d6bde8fe27 Mon Sep 17 00:00:00 2001
From: Eclipse Platform Bot <platform-bot@eclipse.org>
Date: Fri, 19 Dec 2025 08:38:58 +0000
Subject: [PATCH] Version bump(s) for 4.39 stream


diff --git a/ua/org.eclipse.tips.feature/feature.xml b/ua/org.eclipse.tips.feature/feature.xml
index 7b7f1c004c..3ba387be4a 100644
--- a/ua/org.eclipse.tips.feature/feature.xml
+++ b/ua/org.eclipse.tips.feature/feature.xml
@@ -15,7 +15,7 @@
 <feature
       id="org.eclipse.tips.feature"
       label="%featureName"
-      version="0.4.700.qualifier"
+      version="0.4.800.qualifier"
       provider-name="%providerName"
       license-feature="org.eclipse.license"
       license-feature-version="0.0.0">
-- 
2.52.0

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

[akurtakov]

Merging despite new warnings for Java 21 deprecations. They will have to be handled independently.