stats: update the verbosity of anoying key error message

[marceloamaral]

update the verbosity of annoying key error message due to missing gpu metrics

[github-actions]

🤖 SeineSailor

Here is a concise summary of the pull request changes:

Summary: This PR reduces log noise by decreasing the verbosity of an error message related to missing GPU metrics in the stats module from level 5 to 10.

Key Modifications:

• Updated the default section of the switch case for handling unknown node features in stats.go.
• Replaced klog.V(5).Infof with klog.V(10).Infof to log the message at a lower frequency.

Impact: This change reduces the visibility of the error message, resulting in less noise for developers. It does not affect the external interface or behavior of the code.

Observations/Suggestions: The change is localized and does not introduce any breaking changes. However, it would be beneficial to include a brief explanation in the commit message or PR description about the motivation behind reducing the verbosity level, making it easier for reviewers to understand the context.