Log Message:
nginx-devel: updated to 1.13.12

Changes with nginx 1.13.12:
*) Bugfix: connections with gRPC backends might be closed unexpectedly
   when returning a large response.

Changes with nginx 1.13.11:
*) Feature: the "proxy_protocol" parameter of the "listen" \ 
directive now
   supports the PROXY protocol version 2.
*) Bugfix: nginx could not be built with OpenSSL 1.1.1 statically on
   Linux.
*) Bugfix: in the "http_404", "http_500", etc. parameters of the
   "proxy_next_upstream" directive.