Build and test installer #1390

Job	Run time
Build installer (linux-64)	6m 9s
Build installer (linux-aarch64)	4m 52s
Build installer (linux-ppc64le)	5m 33s
Build installer (osx-arm64)	3m 42s
Build installer (osx-64)	4m 46s
Integration tests (Py3 server) (rel-v8r0)	21m 1s
Create environment.yaml (linux-64)	42s
Integration tests (Py3 server) (integration)	19m 31s
Basic tests (centos:7)	1m 2s
macOS tests (macos-11)	1m 35s
Basic tests (centos:8)	54s
macOS tests (macos-12)	1m 16s
Show release notes and diff	2m 7s
	1h 13m 10s

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