message: make as prop optional
diff: @@ -297,10 +297,10 @@ declare module '@primer/components' {
  selected?: boolean;
  }
  interface SelectMenuItemAsButtonProps extends SelectMenuItemCommonProps, Omit<React.ButtonHTMLAttributes<HTMLButtonElement>, 'color'> {
  - as: "button"
  + as?: "button"
  }
  interface SelectMenuItemAsAnchorProps extends SelectMenuItemCommonProps, Omit<React.AnchorHTMLAttributes<HTMLAnchorElement>, 'color'> {
  - as: "a"
  + as?: "a"
  }
  export type SelectMenuItemProps = SelectMenuItemAsButtonProps | SelectMenuItemAsAnchorProps;
  