Updated: libnghttp2{_14,-devel}, {mingw64-x86_64-,}nghttp2 1.53

Updated: libnghttp2{_14,-devel}, {mingw64-x86_64-,}nghttp2 1.53

[Cygwin nghttp2 Maintainer]

The following packages have been upgraded in the Cygwin distribution:

* nghttp2			1.53
* libnghttp2_14			1.53
* libnghttp2-devel		1.53
* mingw64-x86_64-nghttp2	1.53

HTTP/2 and its header compression algorithm HPACK implementation.
The framing layer of HTTP/2 is implemented as a reusable library.
Also included are an HTTP/2 client, server, proxy, load test and
benchmarking tool.

NOTE:
Support for previously deprecated Python bindings, modules, and
documentation has been dropped from previous release onwards.

For more information see the project home page:

	https://nghttp2.org/

or the repo README:

	https://github.com/nghttp2/nghttp2#readme

See link or text below for recent changes; after installation for
complete details of changes read /usr/share/doc/nghttp2/ChangeLog.

	https://nghttp2.org/blog/


1.53		May 10th, 2023

lib

* libnghttp2 uses ngtcp2/sfparse to parse Structured Field Values.

build

The following dependencies have been updated:

* ngtcp2
* nghttp3
* OpenSSL (quictls)
* BoringSSL

third-party

* Bumped mruby to 3.2.0.

nghttpx

* Sends NEW_TOKEN on path change.

* Fixes numeric hostname verification in peer certificate.

* When quitting, waits for all worker processes to stop.
  Previously, we just exit the event loop when the last process exits.
  But because of the bug, it does not work as intended.

* Logs a correct PID on fork.

* Waits for new worker process to be ready before sending graceful
  shutdown event to existing worker processes to avoid down time during
  configuration reload.

* Fixes bug that causes 400 response after HTTP upgrade failure.