TT#17836 Adjust Build-Depends on sencha-cmd for stretch-backport version

With our recent package backport policy we've adjusted the
package version for the stretch-backport. For Debian source
packages that are not present in Debian, we use a -0.1 as the
base Debian revision, adjust Build-Depends accordingly.

Change-Id: I63c240f48b46f5a13a41ed6c07b1dd372e526682

debian/control

@@ -4,7 +4,7 @@ Priority: extra
 Maintainer: Sipwise Development Team <support@sipwise.com>
 Build-Depends:
  debhelper (>= 9~),
- sencha-cmd (>= 6.2.0.103-1~),
+ sencha-cmd (>= 6.2.0.103-0.1~),
  nodejs (>= 4.6.2~),
 Standards-Version: 3.9.8
 Homepage: https://www.sipwise.com/