chore: update scripts/update-android.sh to 8.6.0

Author: web-flow

plugin-build/gradle.properties

@@ -9,7 +9,7 @@ org.gradle.parallel=true
 name = sentry-android-gradle-plugin
 group = io.sentry
 version = 5.3.0
-sdk_version = 8.5.0
+sdk_version = 8.6.0
 
 # publication pom properties
 POM_NAME=Sentry Android Gradle Plugin