Update target android.api to 35 in buildozer.spec

Author: FilipeMarch

testapps/on_device_unit_tests/buildozer.spec

@@ -88,7 +88,7 @@ fullscreen = 0
 #android.permissions = INTERNET
 
 # (int) Target Android API, should be as high as possible.
-#android.api = 27
+android.api = 35
 
 # (int) Minimum API your APK will support.
 #android.minapi = 21