TT#111150 Set pkg.ngcp-rtpengine.nobcg729 build-profile on unit-test workflow

The Ubuntu release used does not have the required package, so we need
to disable it via our build-profile.

Change-Id: I7b929bf5b8cfc60a75e72cbd3b92036cb28d4066
Fixes: commit f791bf03f9

.github/workflows/unit-tests.yml

@@ -20,7 +20,7 @@ jobs:
 
       - name: Get build dependencies
         run: |
-          sudo apt-get build-dep -qq -y .
+          sudo apt-get build-dep -qq -y -Ppkg.ngcp-rtpengine.nobcg729 .
 
       - name: Run unit tests with sanitizers enabled
         run: |