Release prep v4.18.0

[github-actions[bot]]

Automated release-prep through pdk-templates from commit ffc7a40e1388fafb450cb4331b303317cd8f7702. Please verify before merging:

• [ ] last nightly run is green
• [x] Changelog is readable and has no unlabeled pull requests
• [x] Ensure the changelog version and metadata version match

[mhashizume]

Closing and reopening to trigger tests