Release prep v8.1.1

[github-actions[bot]]

Automated release-prep through pdk-templates from commit 0aaa06a2257ab1deb36eee6dc794916fb45b05a3. Please verify before merging:

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