Update tooling and fix linter errors #1070

Job	Run time
lint	33s
quicktests	47s
coverage	1m 19s
unittests (ubuntu-latest)	1m 39s
unittests (self-hosted, linux, arm64)	1m 38s
unittests (macos-latest)	2m 54s
unittests (self-hosted, macos, arm64)	1m 13s
unittests (windows-latest)	3m 59s
Build postcli (ubuntu-latest)	1m 10s
Build postcli (self-hosted, linux, arm64)	30s
Build postcli (macos-latest)	1m 34s
Build postcli (self-hosted, macos, arm64)	34s
Build postcli (windows-latest)	4m 50s
Publish release	0s
	22m 40s

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