ci: pin pipe-action to v0.9.0 in telegram-notify workflow

Author: MachuraHarry

.github/workflows/notify-telegram.yml

@@ -17,6 +17,7 @@ jobs:
       - name: Telegram-Benachrichtigung senden
         uses: MachuraHarry/pipe/pipe-action@master
         with:
+          version: v0.9.0
           script: |
             ev: env "EVENT_NAME"
             msg: if ev == "push"