Add node_modules to yamllint ignore - closes #375 (#461)

Signed-off-by: Mihai Criveti <[email protected]>

Author: crivetimihai

.yamllint

@@ -6,6 +6,7 @@ rules:
 
 # Ignore every YAML (and *.tpl) file under the Helm chart directory.
 ignore: |
+  node_modules/**
   charts/mcp-stack/**/*.yaml
   charts/mcp-stack/**/*.tpl      # templates using .tpl files
   charts/mcp-stack/**/values.yaml