feat: Automated regeneration of documentai v1beta3 client (#26722) #46846

Job	Run time
CI (windows-latest, 4.0, --include-spec)	1m 43s
CI (ubuntu-latest, 4.0, --include-spec --include-yardoc --include-build, --enable-frozen-string-l...	53s
CI (ubuntu-latest, 3.4, --include-spec)	42s
CI (ubuntu-latest, 3.2, --include-spec)	47s
CI (ubuntu-latest, 3.3, --include-spec)	46s
CI (macos-latest, 4.0, --include-spec)	44s
	5m 35s

Provide feedback