Build and test installer #1496

Job	Run time
Build installer (linux-64)	7m 40s
Build installer (linux-aarch64)	6m 10s
Build installer (linux-ppc64le)	5m 32s
Build installer (osx-arm64)	4m 44s
Build installer (osx-64)	6m 21s
macOS tests (macos-11)	1m 59s
Basic tests (centos:7)	1m 0s
macOS tests (macos-12)	2m 10s
Create environment.yaml (linux-64)	40s
Basic tests (centos:8)	1m 6s
Integration tests (Py3 server) (rel-v8r0)	20m 37s
Integration tests (Py3 server) (integration)	45m 53s
Show release notes and diff	2m 7s
	1h 45m 59s

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