Update to ECF 3.15.2 m1a

eclipse.platform.releng.prereqs.sdk/eclipse-sdk-prereqs.target

@@ -75,13 +75,13 @@
       <unit id="org.eclipse.ecf.core.ssl.feature.source.feature.group" version="1.1.600.v20240430-2140"/>
       <unit id="org.eclipse.ecf.filetransfer.feature.feature.group" version="3.14.1900.v20240429-0913"/>
       <unit id="org.eclipse.ecf.filetransfer.feature.source.feature.group" version="3.14.1900.v20240429-0913"/>
-      <unit id="org.eclipse.ecf.filetransfer.httpclientjava.feature.feature.group" version="2.0.200.v20231114-1017"/>
-      <unit id="org.eclipse.ecf.filetransfer.httpclientjava.feature.source.feature.group" version="2.0.200.v20231114-1017"/>
+      <unit id="org.eclipse.ecf.filetransfer.httpclientjava.feature.feature.group" version="2.0.200.v20240703-2243"/>
+      <unit id="org.eclipse.ecf.filetransfer.httpclientjava.feature.source.feature.group" version="2.0.200.v20240703-2243"/>
       <unit id="org.eclipse.ecf.filetransfer.ssl.feature.feature.group" version="1.1.402.v20231021-2127"/>
       <unit id="org.eclipse.ecf.filetransfer.ssl.feature.source.feature.group" version="1.1.402.v20231021-2127"/>
-      <unit id="org.eclipse.ecf.filetransfer.httpclient5.feature.feature.group" version="1.1.702.v20240405-2224"/>
-      <unit id="org.eclipse.ecf.filetransfer.httpclient5.feature.source.feature.group" version="1.1.702.v20240405-2224"/>
-      <repository location="https://download.eclipse.org/rt/ecf/3.15.0/site.p2/3.15.0.v20240502-2230"/>
+      <unit id="org.eclipse.ecf.filetransfer.httpclient5.feature.feature.group" version="1.1.702.v20240703-2243"/>
+      <unit id="org.eclipse.ecf.filetransfer.httpclient5.feature.source.feature.group" version="1.1.702.v20240703-2243"/>
+      <repository location="https://download.eclipse.org/rt/ecf/snapshot/site.p2/3.15.2.v20240711-0807"/>
     </location>
 
     <location includeAllPlatforms="true" includeMode="slicer" type="InstallableUnit">