feat(security/privateca): start generating apiv1beta1 (#2806)

Author: codyoss

internal/.repo-metadata-full.json

@@ -639,6 +639,14 @@
     "docs_url": "https://pkg.go.dev/cloud.google.com/go/secretmanager/apiv1beta1",
     "release_level": "beta"
   },
+  "cloud.google.com/go/security/privateca/apiv1beta1": {
+    "distribution_name": "cloud.google.com/go/security/privateca/apiv1beta1",
+    "description": "",
+    "language": "Go",
+    "client_library_type": "generated",
+    "docs_url": "https://pkg.go.dev/cloud.google.com/go/security/privateca/apiv1beta1",
+    "release_level": "beta"
+  },
   "cloud.google.com/go/securitycenter/apiv1": {
     "distribution_name": "cloud.google.com/go/securitycenter/apiv1",
     "description": "Security Command Center API",

internal/gapicgen/generator/config.go

@@ -792,6 +792,14 @@ var microgenGapicConfigs = []*microgenConfig{
 		apiServiceConfigPath:  "google/cloud/workflows/executions/v1beta/executions_gapic.yaml",
 		releaseLevel:          "beta",
 	},
+	{
+		inputDirectoryPath:    "google/cloud/security/privateca/v1beta1",
+		pkg:                   "privateca",
+		importPath:            "cloud.google.com/go/security/privateca/apiv1beta1",
+		gRPCServiceConfigPath: "google/cloud/security/privateca/v1beta1/privateca_grpc_service_config.json",
+		apiServiceConfigPath:  "google/cloud/security/privateca/v1beta1/privateca_gapic.yaml",
+		releaseLevel:          "beta",
+	},
 
 	// Non-Cloud APIs
 	{