[releng] Update simrel site for 2021-03

Change-Id: I3fdeb557ae998d0382c6e9b69e2fa3d100ffb0cd
diff --git a/pom.xml b/pom.xml
index 7aa013a..4d79d58 100644
--- a/pom.xml
+++ b/pom.xml
@@ -34,7 +34,7 @@
 		<cbi-plugins.version>1.1.7</cbi-plugins.version>
 		<sonar.core.codeCoveragePlugin>jacoco</sonar.core.codeCoveragePlugin>
 		<cdt-site>http://ci.eclipse.org/cdt/job/cdt-master/lastSuccessfulBuild/artifact/releng/org.eclipse.cdt.repo/target/repository</cdt-site>
-		<simrel-site>https://download.eclipse.org/staging/2020-12/</simrel-site>
+		<simrel-site>https://download.eclipse.org/staging/2021-03/</simrel-site>
 		<repo-path>tools/cdt/builds/master/nightly</repo-path>
 		<sonar.dynamicAnalysis>reuseReports</sonar.dynamicAnalysis>
 		<sonar.jacoco.reportPath>${project.basedir}/../../target/jacoco.exec</sonar.jacoco.reportPath>