[racket] aws/glacier: credential scope

> I clicked "update" on pkgs.racket-lang.org. But it seems to be slower
> than usual to refresh. After it does, you can `raco pkg update aws` to
> get the fix.

Something seems wrong/stuck on pkgs.racket-lang.org. The top of the page says:

  "update upload in progress: there may be inconsistencies below"

It's been saying that for nearly an hour.

In the past, clicking "update" would cause a successful refresh -- the
package would get a red star indicating it's updated -- within a
minute or two.