Build and test installer #1444

Job	Run time
Build installer (linux-64)	7m 27s
Build installer (linux-aarch64)	5m 46s
Build installer (linux-ppc64le)	5m 37s
Build installer (osx-arm64)	3m 59s
Build installer (osx-64)	5m 12s
macOS tests (macos-11)	1m 54s
Integration tests (Py3 server) (rel-v8r0)	21m 3s
macOS tests (macos-12)	2m 1s
Create environment.yaml (linux-64)	42s
Integration tests (Py3 server) (integration)	9m 58s
Basic tests (centos:7)	53s
Basic tests (centos:8)	57s
Show release notes and diff	2m 59s
	1h 8m 28s

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