feat: Automated regeneration of discovery v1 client (#26667) #46722

Job	Run time
CI (macos-latest, 4.0, --include-spec)	44s
CI (ubuntu-latest, 3.3, --include-spec)	1m 5s
CI (ubuntu-latest, 3.2, --include-spec)	1m 12s
CI (ubuntu-latest, 3.4, --include-spec)	1m 7s
CI (ubuntu-latest, 4.0, --include-spec --include-yardoc --include-build, --enable-frozen-string-l...	1m 8s
CI (windows-latest, 4.0, --include-spec)	2m 51s
	8m 7s

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