fix(cli): If failures exit code non-zero

Author: spbsoluble

scripts/sync_nuget.py

@@ -16,6 +16,7 @@
 
 import os
 import subprocess
+import sys
 from pathlib import Path
 
 import click
@@ -266,6 +267,7 @@ def sync_packages(self) -> None:
             click.echo("\nFailed versions:")
             for entry in failures:
                 click.echo(f"  - {entry}")
+            sys.exit(1)
 
 
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