api/types/volume: change ListResponse.Volumes to a non-pointer slice

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

api/docs/v1.52.yaml

@@ -2149,6 +2149,7 @@ definitions:
   Volume:
     type: "object"
     required: [Name, Driver, Mountpoint, Labels, Scope, Options]
+    x-nullable: false
     properties:
       Name:
         type: "string"

api/swagger.yaml

@@ -2149,6 +2149,7 @@ definitions:
   Volume:
     type: "object"
     required: [Name, Driver, Mountpoint, Labels, Scope, Options]
+    x-nullable: false
     properties:
       Name:
         type: "string"

api/types/volume/list_response.go

@@ -13,7 +13,7 @@ package volume
 type ListResponse struct {
 
 	// List of volumes
-	Volumes []*Volume `json:"Volumes"`
+	Volumes []Volume `json:"Volumes"`
 
 	// Warnings that occurred when fetching the list of volumes.
 	//