tests: ui: fix crash file generation to also contain Dependencies field

We started collecting deps in the initial crash file to hopefully have a
more exact picture of the system at the time of the crash. This should
also be reflected in the test data.

This enables coverage for the commit
"ui: don't rely on Dependencies to know if collect_info() has been run"

Signed-off-by: Simon Chopin <simon.chopin@canonical.com>

tests/integration/test_ui.py

@@ -907,6 +907,7 @@ def _gen_test_crash(self):
                 r.add_proc_info(pid)
                 r.add_user_info()
                 r.add_os_info()
+                r.add_package_info()
 
                 # generate a core dump
                 os.kill(pid, signal.SIGSEGV)