Verify nuget package signature

Author: jozefizso

.github/workflows/sign.yml

@@ -77,6 +77,9 @@ jobs:
           --trusted-signing-account "${{ secrets.TRUSTED_SIGNING_ACCOUNT }}"
           --trusted-signing-certificate-profile "${{ secrets.TRUSTED_SIGNING_PROFILE }}"
 
+      - name: verify signature
+        run: dotnet nuget verify ./artifacts/**.nupkg
+
       - name: artifact
         uses: actions/upload-artifact@v5
         with: