Restore automatic spec updates #356

Job	Run time
Integration (macos-13, 3.5)	15s
CI (macos-13, 3.5)	19s
Integration (macos-13, 3.6)	1m 0s
CI (macos-13, 3.6)	41s
Integration (macos-13, 3.7)	58s
CI (macos-13, 3.7)	41s
Docs	2m 1s
Integration (macos-13, 3.8)	44s
CI (macos-13, 3.8)	28s
Integration (macos-13, pypy-3.7)	1m 28s
CI (macos-13, pypy-3.7)	53s
Integration (windows-latest, 3.5)	1m 40s
CI (windows-latest, 3.5)	1m 7s
CI (windows-latest, 3.7)	1m 7s
Integration (windows-latest, 3.7)	1m 32s
CI (windows-latest, 3.8)	51s
Integration (windows-latest, 3.8)	1m 21s
CI (windows-latest, pypy-3.7)	1m 58s
Integration (windows-latest, pypy-3.7)	2m 5s
CI (ubuntu-20.04, 3.7)	21s
Integration (ubuntu-20.04, 3.7)	37s
CI (ubuntu-20.04, 2.7)	25s
Integration (ubuntu-20.04, 2.7)	57s
	23m 29s

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