TT#66583 Update prosody version for mr8.2+ (to ensure new/upstream prosody is in use)

We are not matching to new prosody version 0.11.2-1 here as it can
be changed any time by Debian (as we migrated to upstream prosody version).

Also goss doesn't have support for regexps for 'versions' field,
so we cannot check something like:
>   prosody:
>     installed: true
>     versions:
>     - /0.11.2-.*/

After a long trying with goss 'matches/match-regexp/semver-constraint'
I decided to stop on the current version, where we inside old version is not available.

Change-Id: I626be7a23fd2b31d468f4cd9411530b24eb7216b

templates/310_package-ngcp.yaml.tt2

@@ -88,4 +88,5 @@ package:
   prosody:
     installed: true
     versions:
-    - 0.9.12-2+deb9u2+bpo10+1
+      not:
+        - "0.9.12-2+deb9u2+bpo10+1"