Release prep v9.3.0

[github-actions]

Automated release-prep through pdk-templates from commit a843b84.
Please verify before merging:

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

[CLAassistant]

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[kenyon]

Might as well get some more PRs in the next release now: #1141, #1159, #1162