fix: add blank lines before return statements (nlreturn)

Fix nlreturn linting issues by adding blank lines before return
statements in cli and secret packages.

internal/cli/version.go

@@ -48,6 +48,7 @@ func VersionCommands(cli *Instance) *cobra.Command {
 	}
 
 	versionCmd.AddCommand(listCmd, promoteCmd)
+
 	return versionCmd
 }
 
@@ -154,6 +155,7 @@ func (cli *Instance) ListVersions(cmd *cobra.Command, secretName string) error {
 	}
 
 	w.Flush()
+
 	return nil
 }