fix: allow CSV files and disable failure issues

Add allowed-files for .github/uvs.csv and .github/views.csv.
Set fallback-as-issue: false to prevent auto-generated issues
on PR creation failures.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: DanWahlin

.github/workflows/traffic-updater.lock.yml

@@ -25,6 +25,10 @@ safe-outputs:
     labels: [automated-update, traffic-data]
     title-prefix: "[bot] "
     base-branch: main
+    fallback-as-issue: false
+    allowed-files:
+      - ".github/uvs.csv"
+      - ".github/views.csv"
 ---
 
 # Collect Weekly Repo Traffic