Version bump(s) for 4.38 stream

Author: eclipse-platform-bot

eclipse.platform.releng/features/org.eclipse.test-feature/feature.xml

@@ -2,7 +2,7 @@
 <feature
       id="org.eclipse.test"
       label="%featureName"
-      version="3.9.300.qualifier"
+      version="3.9.400.qualifier"
       provider-name="%providerName"
       license-feature="org.eclipse.license"
       license-feature-version="0.0.0">