Bump Android compile SDK to 36

[prof18]

Summary

• Bump the shared Android compile SDK version from 34 to 36.

Local verification

• ./gradlew -q --console=plain :rssparser:testAndroidHostTest :rssparser:jvmTest :rssparser:apiCheck :samples:multiplatform:androidApp:assembleRelease :samples:android:assembleRelease :samples:java:assembleRelease
• ./gradlew -q --console=plain :samples:multiplatform:desktopApp:packageDistributionForCurrentOS :samples:multiplatform:webApp:wasmJsBrowserDistribution
• ./gradlew -q --console=plain :rssparser:check -x :rssparser:tvosSimulatorArm64Test -x :rssparser:tvosX64Test -x :rssparser:watchosSimulatorArm64Test -x :rssparser:watchosX64Test
• ./gradlew -q --console=plain check -x :rssparser:tvosSimulatorArm64Test -x :rssparser:tvosX64Test -x :rssparser:watchosSimulatorArm64Test -x :rssparser:watchosX64Test

Note: full local :rssparser:check without exclusions is blocked on this machine because no tvOS/watchOS simulator runtimes are installed locally; CI runs those Apple lanes separately.