jobs/gerrit: osmo-dia2gsup: test debian 11 and 12

Don't try to build the debian package for debian 10. It fails as rebar3
is not in debian 10. Test the build for debian 11 and 12, which is what
we build the package for on obs.osmocom.org.

Change-Id: Id01b466f1bacc9cbb8e835f69da765f5fdccfdc2

jobs/gerrit-verifications.yml

@@ -189,7 +189,7 @@
           repos_url: '{gerrit_url}/erlang/{repos}'
           gerrit_project: 'erlang/{repos}'
           cmd: '{docker_run} {docker_img_erlang} {timeout_cmd} /build/contrib/jenkins.sh'
-          pipeline_binpkgs: "debian:10 debian:12"
+          pipeline_binpkgs: "debian:11 debian:12"
 
       - osmo-e1-hardware:
           a2_name: JOB_TYPE