[daily] Increase timeout

The daily test hasn't run correctly in the last weeks. The testing of
the packages seem to be aborted because the default maximum execution
time (6 hours) is exceeded. Increase the timeout to 12 hours.

.github/workflows/daily.yml

@@ -10,6 +10,8 @@ on:
 jobs:
   test:
     runs-on: ${{ matrix.os }}
+    # Testing all packages takes several hours
+    timeout-minutes: 720
     strategy:
       fail-fast: false
       # Updating the wiki fails if between the checkout of the wiki and the push of the update the other job pushes its update