add xcm migration for xcm v5 (#2926)

Author: xlc

runtime/acala/src/lib.rs

@@ -1998,7 +1998,7 @@ pub type Executive = frame_executive::Executive<
 >;
 
 #[allow(unused_parens)]
-type Migrations = ();
+type Migrations = (pallet_xcm::migration::MigrateToLatestXcmVersion<Runtime>,);
 
 #[cfg(feature = "runtime-benchmarks")]
 #[macro_use]

runtime/karura/src/lib.rs

@@ -2005,7 +2005,7 @@ pub type Executive = frame_executive::Executive<
 >;
 
 #[allow(unused_parens)]
-type Migrations = ();
+type Migrations = (pallet_xcm::migration::MigrateToLatestXcmVersion<Runtime>,);
 
 #[cfg(feature = "runtime-benchmarks")]
 #[macro_use]