Add 1.8.1 and Use SDK's new swift concurrency API's

Package.swift

@@ -19,7 +19,7 @@ let package = Package(
             targets: ["DolbyIORTSUIKit"])
     ],
     dependencies: [
-        .package(url: "https://github.com/millicast/millicast-sdk-swift-package", exact: "1.7.0")
+        .package(url: "https://github.com/millicast/millicast-sdk-swift-package", exact: "1.8.1")
     ],
     targets: [
         // Targets are the basic building blocks of a package. A target can define a module or a test suite.

Sources/DolbyIORTSCore/Builder/StreamSourceBuilder.swift

@@ -18,19 +18,12 @@ final class StreamSourceBuilder {
         let trackID: String
         let mediaType: StreamSource.MediaType
 
-        /// Initialises the Track Item, if possible from the passed-in String
-        /// - Parameter track: A string value passed in by the SDK and is expected to be of format `{mediaType}/{trackID}`
         init?(track: String) {
-            let trackInfoList = track.split(separator: "/")
-
-            guard
-                trackInfoList.count == 2,
-                let mediaType = StreamSource.MediaType(rawValue: String(trackInfoList[0].lowercased()))
-            else {
+            guard let mediaType = StreamSource.MediaType(rawValue: track) else {
                 return nil
             }
             self.mediaType = mediaType
-            self.trackID = String(trackInfoList[1])
+            self.trackID = track
         }
     }