If the .deb file for the downlevel version is still there (copy it out so it's not cleaned up in future), and you can do "dpkg -i postgres-9.3_9.3.4-1.deb" Failing that, you can download the downlevel deb file from somewhere. (perhaps here?https://launchpad.net/ubuntu/+source/...
runs-on: 'ubuntu-latest' strategy: matrix: pg: ["12.7","13.3"] include: - pg: 12.7 pg_major: 12 - pg: 13.3 pg_major: 13 fail-fast: false env: PG_VERSION: ${{ matrix.pg }} POSTGRES_HOST_AUTH_METHOD: trust GENERATE_DOWNGRADE_SCRIPT: ON steps: - name: Checkout TimescaleDB use...