Revise OS versions for SNMP monitoring setup

[m-shiono]

Updated supported operating systems for SNMP performance monitoring.

Please follow conventional commit standards
in your commit messages and pull request title.

Give us some context

• What problems does this PR solve?
  • Some unsupported OSes remained
• Add any context that will help us review your changes such as testing notes,
  links to related docs, screenshots, etc.
  • Ubuntu: https://ubuntu.com/about/release-cycle
  • RHEL: https://access.redhat.com/support/policy/updates/errata
  • Debian: https://wiki.debian.org/DebianReleases
  • CentOS: https://www.centos.org/centos-linux-eol/
• If your issue relates to an existing GitHub issue, please link to it.
  • Remove unsupported OS in npm syslog docs #22375

[CLAassistant]

All committers have signed the CLA.

[github-actions]

Hi @m-shiono 👋

Thanks for your pull request! Your PR is in a queue, and a writer will take a look soon. We generally publish small edits within one business day, and larger edits within three days.

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[PallaviWrite]

@m-shiono could you please sign-in the CLA

[PallaviWrite]

@m-shiono could you please sign-in the CLA

[m-shiono]

I did sign in. pls check

[PallaviWrite]

LGTM