feat: Automated regeneration of runtimeconfig v1beta1 client (#26719) #46838

Job	Run time
CI (ubuntu-latest, 4.0, --include-spec --include-yardoc --include-build, --enable-frozen-string-l...	44s
CI (windows-latest, 4.0, --include-spec)	1m 31s
CI (ubuntu-latest, 3.3, --include-spec)	41s
CI (ubuntu-latest, 3.4, --include-spec)	40s
CI (ubuntu-latest, 3.2, --include-spec)	37s
CI (macos-latest, 4.0, --include-spec)	41s
	4m 54s

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