Android: Upgrade protobuf dependency to 0.10.0

This lets use set newDsl=true in gradle.properties, which makes us
complaint with future gradle versions, so no more need to worry about
that for the foreseeable future.

build.gradle.kts

@@ -1,4 +1,4 @@
 plugins {
 	id("com.android.application") version "9.1.1" apply false
-	id("com.google.protobuf") version "0.9.6" apply false
+	id("com.google.protobuf") version "0.10.0" apply false
 }

gradle.properties

@@ -4,4 +4,4 @@ android.nonTransitiveRClass=true
 android.nonFinalResIds=true
 # This suppression is only needed for the legacy build.
 android.ndk.suppressMinSdkVersionError=21
-android.newDsl=false
+android.newDsl=true