Update Arm SoC Migration learning path metadata

Added draft status and cascade settings for the learning path.

Author: pareenaverma

content/learning-paths/servers-and-cloud-computing/arm-soc-migration-learning-path/_index.md

@@ -1,5 +1,9 @@
 ---
 title: Migrate applications between Arm platforms using Kiro Arm SoC Migration Power
+
+draft: true
+cascade:
+    draft: true
 
 minutes_to_complete: 60