feat(kmp): add SPM note in getting started

Author: buenaflor

platform-includes/getting-started-install/kotlin.kotlin-multiplatform.mdx

@@ -7,3 +7,9 @@ plugins {
 ```
 
 The plugin installs the Sentry KMP dependency. If you're using the Cocoapods plugin, it will also install the Sentry Cocoa dependency.
+
+<Note>
+
+If you use Swift Package Manager instead of Cocoapods, you need to install the [Sentry-Cocoa dependency via Swift Package Manager](/platforms/apple/guides/ios/install/swift-package-manager/) in your iOS project first before executing the gradle plugin. 
+
+</Note>