Update staging.yaml

.github/workflows/staging.yaml

@@ -32,6 +32,7 @@ jobs:
           POSTHOG_API_KEY=${{secrets.POSTHOG_API_KEY}}
           POSTHOG_HOST=${{secrets.POSTHOG_HOST}}
           SEGMENT_PUBLIC_KEY=${{secrets.SEGMENT_PUBLIC_KEY}}
+          APPLICATION_CHART_REPO_URL=${{secrets.APPLICATION_CHART_REPO_URL}}
           EOL
       - name: Build
         run: |