ci: build when .npmrc changes

The previous commit added no pipeline run: .npmrc is not in the changes list that
triggers one. That file decides which registry dependencies come from, so a change
to it deserves a build rather than a wave-through. This commit touches
.gitlab-ci.yml, which is on the list - so it verifies itself.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

.gitlab-ci.yml

@@ -31,6 +31,9 @@
   - scripts/**/*
   - pnpm-lock.yaml
   - pnpm-workspace.yaml
+  # .npmrc bindet den Scope @sorb an rohana. Aendert sich die Datei, aendert
+  # sich, WOHER Abhaengigkeiten kommen - das gehoert gebaut, nicht durchgewunken.
+  - .npmrc
   - .gitlab-ci.yml
 
 workflow: