[releng] Back to staging repo for builds

This reverts commit 41131daaaa6d556298c650804492e1393fa28a6c.

releng/org.eclipse.epp.config/parent/pom.xml

diff --git a/releng/org.eclipse.epp.config/parent/pom.xml b/releng/org.eclipse.epp.config/parent/pom.xml
index 8110ce2..3b66515 100644
--- a/releng/org.eclipse.epp.config/parent/pom.xml
+++ b/releng/org.eclipse.epp.config/parent/pom.xml
@@ -43,7 +43,7 @@
     <!-- Name release directory on download.eclipse.org -->
     <RELEASE_DIR>202208041200</RELEASE_DIR>
     <!-- SimRel Repo to build from -->
-    <SIMREL_REPO>https://download.eclipse.org/releases/2022-09/202208051000/</SIMREL_REPO>
+    <SIMREL_REPO>https://download.eclipse.org/staging/2022-09/</SIMREL_REPO>
     <!-- ID used to generate the filename of the packages -->
     <eclipse.simultaneous.release.id>${RELEASE_NAME}-${RELEASE_MILESTONE}</eclipse.simultaneous.release.id>
     <!-- Timestamp used in various places, e.g. the about dialog (see about.mappings) -->