[#862] Prepare 4.8.0 RC1 contribution

* EMF
* ECF
* Platform
* EGit

Author: ruspl-afed

org.eclipse.mylyn-target/org.eclipse.mylyn.target.target

@@ -20,7 +20,7 @@
 			<unit id="org.eclipse.license.feature.group" version="0.0.0"/>
 		</location>
 		<location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">
-			<repository location="https://download.eclipse.org/eclipse/updates/4.37-I-builds/I20250814-1800/"/>
+			<repository location="https://download.eclipse.org/eclipse/updates/4.37-I-builds/I20250820-1800/"/>
 			<unit id="org.eclipse.equinox.sdk.feature.group" version="0.0.0"/>
 			<unit id="org.eclipse.equinox.p2.sdk.feature.group" version="0.0.0"/>
 			<unit id="org.eclipse.sdk.feature.group" version="0.0.0"/>
@@ -30,17 +30,17 @@
 			<unit id="org.eclipse.egit.github.core" version="0.0.0"/>
 		</location>
 		<location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">
-			<repository location="https://download.eclipse.org/egit/staging/v7.4.0.202508191000-m3/"/>
+			<repository location="https://download.eclipse.org/egit/staging/v7.4.0.202508261455-rc1/"/>
 			<unit id="org.eclipse.egit.feature.group" version="0.0.0"/>
 			<unit id="org.eclipse.jgit.feature.group" version="0.0.0"/>
 			<unit id="org.eclipse.jgit.lfs.feature.group" version="0.0.0"/>
 		</location>
 		<location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">
-			<repository location="https://download.eclipse.org/modeling/emf/emf/builds/milestone/S202508121310/"/>
+			<repository location="https://download.eclipse.org/modeling/emf/emf/builds/release/2.43.0/"/>
 			<unit id="org.eclipse.emf.sdk.feature.group" version="0.0.0"/>
 		</location>
 		<location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">
-			<repository location="https://download.eclipse.org/rt/ecf/3.16.2/site.p2/3.16.2.v20250528-1917/"/>
+			<repository location="https://download.eclipse.org/rt/ecf/3.16.4/site.p2/3.16.4.v20250819-0049/"/>
 			<unit id="org.eclipse.ecf.remoteservice.sdk.feature.feature.group" version="0.0.0"/>
 		</location>
 		<location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">