feat: @W-17369132 keep retrieve command hidden (#996)

* feat: @W-17369132 keep retrieve command hidden

* chore: restore yarn.lock

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Co-authored-by: Mike Donnalley <mdonnalley@salesforce.com>

Author: KSCCO

src/commands/package/version/retrieve.ts

@@ -28,6 +28,7 @@ export type FileDownloadEntry = {
 export type PackageVersionRetrieveCommandResult = FileDownloadEntry[];
 
 export class PackageVersionRetrieveCommand extends SfCommand<PackageVersionRetrieveCommandResult> {
+  public static readonly hidden = true;
   public static readonly summary = messages.getMessage('summary');
   public static readonly description = messages.getMessage('description');
   public static readonly examples = messages.getMessages('examples');