Update composemediaplayer dependency to v0.3.0

Upgraded the dependency version in the README to reflect the latest release. This ensures users implement the updated library version with new features or fixes.

README.MD

@@ -36,7 +36,7 @@ To add Compose Media Player to your project, include the following dependency in
 
 ```kotlin
 dependencies {
-    implementation("io.github.kdroidfilter:composemediaplayer:0.2.0")
+    implementation("io.github.kdroidfilter:composemediaplayer:0.3.0")
 }
 ```