Build and test installer #1404

Job	Run time
Build installer (linux-64)	5m 43s
Build installer (linux-aarch64)	4m 55s
Build installer (linux-ppc64le)	4m 57s
Build installer (osx-arm64)	3m 53s
Build installer (osx-64)	4m 52s
Integration tests (Py3 server) (rel-v8r0)	21m 18s
Basic tests (centos:7)	1m 3s
Integration tests (Py3 server) (integration)	22m 36s
macOS tests (macos-11)	1m 41s
Create environment.yaml (linux-64)	39s
Basic tests (centos:8)	56s
macOS tests (macos-12)	1m 15s
Show release notes and diff	1m 22s
	1h 15m 10s

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