nginx pgp key nginx_signing.key

[Ivan Strelnikov]

Hello!

Many years ago i started use `nginx_signing.key` from this url: 
`https://nginx.org/packages/keys/nginx_signing.key` but now i find out 
that it is expired and outdated.

Fresh key is here: `https://nginx.org/keys/nginx_signing.key` and i 
think maybe there is a mistake that old key file is exist or outdated?

Maybe we should update it or please explain me if i wrong.
P.S. Sorry, if this is wrong place for this kind of questions, i can't 
find more proper one.

--
Ivan