nginx: update to 1.25.1

nginx: update to 1.25.1

Update nginx to 1.25.1.

    *) Feature: the "http2" directive, which enables HTTP/2 on a per-server
       basis; the "http2" parameter of the "listen" directive is now
       deprecated.

    *) Change: HTTP/2 server push support has been removed.

    *) Change: the deprecated "ssl" directive is not supported anymore.

    *) Bugfix: in HTTP/3 when using OpenSSL.

Signed-off-by: Tiago Gaspar <redacted>
[ improve commit title and add nginx changelog ]
Signed-off-by: Christian Marangi <redacted>