Stop using simrel 2021-06 in tests

It's archived and frequent usage leads to broken builds with:
"org.eclipse.equinox.p2.core.ProvisionException: No repository found at
https://download.eclipse.org/technology/epp/packages/2021-06/202106121200."
as archives are not mirrored and this leads to heavy load (and DoS) of
archive.eclipse.org.

tycho-its/projects/target.restriction.filter/META-INF/MANIFEST.MF

@@ -8,4 +8,4 @@ Require-Bundle: org.eclipse.osgi,
  org.junit
 Bundle-Activator: test.Activator
 Bundle-ActivationPolicy: lazy
-Bundle-RequiredExecutionEnvironment: JavaSE-11
+Bundle-RequiredExecutionEnvironment: JavaSE-17

tycho-its/projects/target.restriction.filter/pom.xml

@@ -39,15 +39,15 @@
 				<artifactId>target-platform-configuration</artifactId>
 				<version>${tycho-version}</version>
 				<configuration>
-					<executionEnvironment>JavaSE-11</executionEnvironment>
+					<executionEnvironment>JavaSE-17</executionEnvironment>
 					<filters>
 						<filter>
 							<!-- make sure that a 3.4.x version of bundle org.eclipse.osgi is used -->
 							<type> eclipse-plugin </type>
 							<id> org.eclipse.osgi </id>  <!-- extra whitespace is not needed; it is just here to make the test harder -->
 							<restrictTo>
 								<versionRange>
-									[3.16,3.17)
+									[3.21,3.22)
 								</versionRange>
 							</restrictTo>
 						</filter>

tycho-its/projects/target.restriction.filter/src/test/Test.java

@@ -20,7 +20,7 @@ public class Test extends TestCase {
 
     public void test() {
         Version version = new Version((String) Activator.context.getBundle(0).getHeaders().get("Bundle-Version"));
-        assertTrue(version.compareTo(new Version("3.17")) < 0);
+        assertTrue(version.compareTo(new Version("3.22")) < 0);
     }
 
 }

tycho-its/src/test/java/org/eclipse/tycho/test/target/TargetPlatformFilteringIntegrationTest.java

@@ -22,7 +22,7 @@ public class TargetPlatformFilteringIntegrationTest extends AbstractTychoIntegra
 	@Test
 	public void test() throws Exception {
 		Verifier verifier = getVerifier("target.restriction.filter", false);
-		verifier.addCliOption("-De342-repo=" + "https:////download.eclipse.org/releases/2021-06/");
+		verifier.addCliOption("-De342-repo=" + "https:////download.eclipse.org/releases/2024-09/");
 		verifier.addCliOption("-De352-repo=" + P2Repositories.ECLIPSE_LATEST.toString().replace("/", "//"));
 		verifier.executeGoal("verify");
 		verifier.verifyErrorFreeLog();