workflows: extend changes triggering anaconda webui tests

We might want to get more granular in the future, for example run
cockpit-network and cockpit-storage tests but it is out of scope of the
addressed issue.

Resolves: INSTALLER-4625

Author: rvykydal

.github/workflows/trigger-anaconda.yml

@@ -13,6 +13,7 @@ on:
     paths:
       - src/cockpit/**
       - pkg/storaged/**
+      - pkg/networkmanager/**
 jobs:
   trigger:
     runs-on: ubuntu-latest