Add PostgreSQL 16 core package build for Ubuntu focal#1182

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kemalbuyukkaya wants to merge 7 commits into

Commits on Jun 19, 2026

Add signed PostgreSQL 16 core package build for Ubuntu focal
kemalbuyukkaya
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debsigner: accept ASCII-armored secret key, fail fast if none imported
kemalbuyukkaya
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ci: don't run Citus extension build/test on the pg16-focal branch
kemalbuyukkaya
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Revert debsigner script and extension-workflow changes
kemalbuyukkaya
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build-pg16-focal: sign with prebuilt debsigner image, pin ubuntu-20.04
kemalbuyukkaya
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build-pg16-focal: run on ubuntu-latest
kemalbuyukkaya
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build-pg16-focal: sign with the common PACKAGING_SECRET_KEY/PASSPHRASE
kemalbuyukkaya
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