Add google_eventarc_message_bus resource (hashicorp#13042) (hashicorp#21611)

[upstream:5c2e509fd2b8fe582e62c049d2d106ad21acd749]

Signed-off-by: Modular Magician <[email protected]>

Author: modular-magician

.changelog/13042.txt

@@ -0,0 +1,3 @@
+```release-note:new-resource
+`google_eventarc_message_bus`
+```

google/provider/provider_mmv1_resources.go

@@ -485,9 +485,9 @@ var handwrittenIAMDatasources = map[string]*schema.Resource{
 }
 
 // Resources
-// Generated resources: 534
+// Generated resources: 535
 // Generated IAM resources: 279
-// Total generated resources: 813
+// Total generated resources: 814
 var generatedResources = map[string]*schema.Resource{
 	"google_folder_access_approval_settings":                                     accessapproval.ResourceAccessApprovalFolderSettings(),
 	"google_organization_access_approval_settings":                               accessapproval.ResourceAccessApprovalOrganizationSettings(),
@@ -912,6 +912,7 @@ var generatedResources = map[string]*schema.Resource{
 	"google_edgenetwork_subnet":                                                  edgenetwork.ResourceEdgenetworkSubnet(),
 	"google_essential_contacts_contact":                                          essentialcontacts.ResourceEssentialContactsContact(),
 	"google_eventarc_google_channel_config":                                      eventarc.ResourceEventarcGoogleChannelConfig(),
+	"google_eventarc_message_bus":                                                eventarc.ResourceEventarcMessageBus(),
 	"google_eventarc_trigger":                                                    eventarc.ResourceEventarcTrigger(),
 	"google_filestore_backup":                                                    filestore.ResourceFilestoreBackup(),
 	"google_filestore_instance":                                                  filestore.ResourceFilestoreInstance(),