pallet-atomic-swap: generialized swap action (#6421)

* pallet-atomic-swap: generialized swap action

* Bump spec_version

* Fix weight calculation

* Remove unnecessary type aliases

substrate/bin/node/runtime/src/lib.rs

@@ -97,7 +97,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	// and set impl_version to 0. If only runtime
 	// implementation changes and behavior does not, then leave spec_version as
 	// is and increment impl_version.
-	spec_version: 253,
+	spec_version: 254,
 	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
 	transaction_version: 1,