[tlu] updated gpg

[Adam R. Maxwell]

> On Feb 28, 2021, at 14:51 , Herbert Schulz <herbs at wideopenwest.com> wrote:
> 
> now I've a real universal, x86_64/arm64, gpg.universal-darwin! Then I installed the large list of TeX Live 2021 pretest updates. Repeated the procedure on a second system and all went smoothly there also.

Thanks, Herb! Much appreciated, as I haven't had time to download and install the pretest yet.

-- adam