[ANT] Only attempt to set security-manager when it is supported

[HannesWell]

This avoids trowing+catching an UnsupportedOperationException and additional (error) logs if setting a SecurityManager is disallowed. The latter breaks ant-tests that check the log output.

Part of eclipse-platform/eclipse.platform.releng.aggregator#2623

[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:

ant/org.eclipse.ant.core/META-INF/MANIFEST.MF
ant/org.eclipse.ant.tests.core/META-INF/MANIFEST.MF

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 0fa3e04390aba6bacda04573336f945ce9a76124 Mon Sep 17 00:00:00 2001
From: Eclipse Platform Bot <platform-bot@eclipse.org>
Date: Sun, 15 Dec 2024 14:01:49 +0000
Subject: [PATCH] Version bump(s) for 4.35 stream


diff --git a/ant/org.eclipse.ant.core/META-INF/MANIFEST.MF b/ant/org.eclipse.ant.core/META-INF/MANIFEST.MF
index e664ce24fb..e4fcb869a7 100644
--- a/ant/org.eclipse.ant.core/META-INF/MANIFEST.MF
+++ b/ant/org.eclipse.ant.core/META-INF/MANIFEST.MF
@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: %pluginName
 Bundle-SymbolicName: org.eclipse.ant.core; singleton:=true
-Bundle-Version: 3.7.500.qualifier
+Bundle-Version: 3.7.600.qualifier
 Bundle-Activator: org.eclipse.ant.core.AntCorePlugin
 Bundle-Vendor: %providerName
 Bundle-Localization: plugin
diff --git a/ant/org.eclipse.ant.tests.core/META-INF/MANIFEST.MF b/ant/org.eclipse.ant.tests.core/META-INF/MANIFEST.MF
index 8ba96be34d..94398ae36f 100644
--- a/ant/org.eclipse.ant.tests.core/META-INF/MANIFEST.MF
+++ b/ant/org.eclipse.ant.tests.core/META-INF/MANIFEST.MF
@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: %pluginName
 Bundle-SymbolicName: org.eclipse.ant.tests.core; singleton:=true
-Bundle-Version: 3.7.500.qualifier
+Bundle-Version: 3.7.600.qualifier
 Bundle-ClassPath: anttestscore.jar
 Bundle-Activator: org.eclipse.ant.tests.core.testplugin.AntTestPlugin
 Bundle-Vendor: %providerName
-- 
2.47.1

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

[github-actions]

Test Results

 1 755 files  ±0   1 755 suites  ±0   1h 25m 13s ⏱️ - 3m 14s
 4 170 tests ±0   4 148 ✅ ±0   22 💤 ±0  0 ❌ ±0 
13 107 runs  ±0  12 943 ✅ ±0  164 💤 ±0  0 ❌ ±0 

Results for commit fbfc5dc. ± Comparison against base commit b946e83.

♻️ This comment has been updated with latest results.