Build and test installer #1578

Job	Run time
Build installer (linux-64)	7m 10s
Build installer (linux-aarch64)	5m 43s
Build installer (linux-ppc64le)	5m 23s
Build installer (osx-arm64)	4m 33s
Build installer (osx-64)	6m 46s
macOS tests (macos-11)	1s
Integration tests (Py3 server) (rel-v8r0)	20m 52s
macOS tests (macos-12)	1m 31s
Create environment.yaml (linux-64)	46s
Integration tests (Py3 server) (integration)	24m 31s
Basic tests (centos:7)	1m 11s
Basic tests (centos:8)	57s
Show release notes and diff	2m 0s
	1h 21m 24s

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