sensitive_pn: Add sensitive numbers for Serbia

* Source: http://www.mup.gov.rs/wps/portal/sr/gradjani/saveti/nasilje%20u%20porodici/

Change-Id: Id941e47347ac2b8c7230d314e1b7fb750e4dec1e

prebuilt/common/etc/sensitive_pn.xml

@@ -30,6 +30,14 @@
     <sensitivePN network="214">
         <item>016</item>
     </sensitivePN>
+    <!--Serbia-->
+    <sensitivePN network="220">
+        <item>2645328</item>
+        <item>3192782</item>
+        <item>3626006</item>
+        <item>0800100600</item>
+        <item>0800123456</item>
+    </sensitivePN>
     <!--Italy-->
     <sensitivePN network="222">
         <item>1522</item>