feat: Automated regeneration of secretmanager v1beta2 client (#26689) #46759

Job	Run time
CI (ubuntu-latest, 3.4, --include-spec)	38s
CI (ubuntu-latest, 4.0, --include-spec --include-yardoc --include-build, --enable-frozen-string-l...	39s
CI (macos-latest, 4.0, --include-spec)	37s
CI (windows-latest, 4.0, --include-spec)	1m 32s
CI (ubuntu-latest, 3.2, --include-spec)	37s
CI (ubuntu-latest, 3.3, --include-spec)	41s
	4m 44s

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