MT#17699 Bump Standards-Version to 3.9.7

No further changes required to update to Debian Policy 3.9.7[.0]

Change-Id: I013e1b719f63a6aaf0d70df841809543968d6290

debian/control

@@ -3,7 +3,7 @@ Section: admin
 Priority: extra
 Maintainer: Sipwise Development Team <support@sipwise.com>
 Build-Depends: debhelper (>= 9~)
-Standards-Version: 3.9.6
+Standards-Version: 3.9.7
 Homepage: https://www.sipwise.com/
 
 Package: ngcp-api-tools