SLING-3027 Improve Launchpad Karaf Features

add missing Sling i18n dependency for Composum
diff --git a/src/main/feature/feature.xml b/src/main/feature/feature.xml
index 12f1c72..840f5c8 100644
--- a/src/main/feature/feature.xml
+++ b/src/main/feature/feature.xml
@@ -698,6 +698,7 @@
     <bundle>mvn:com.composum.sling.core/composum-sling-package-manager/1.11.4</bundle>
     <!-- dependencies -->
     <feature version="${project.version}">sling</feature>
+    <feature version="${project.version}">sling-i18n</feature>
     <feature version="${project.version}">sling-jcr</feature>
     <feature version="${project.version}">sling-scripting-jsp</feature>
     <feature version="${project.version}">sling-servlets</feature>