Log Message:
nghttp2, nghttp2-tools: updated to 1.55.0

Nghttp2 v1.55.0

build

The following dependencies have been updated:

ngtcp2
nghttp3
BoringSSL
This release fixes build error without libev.

third-party

llhttp has been updated.

Cross-compiling mruby is now supported.

nghttpx

UDP_GRO is enabled for QUIC socket.

The initial QUIC packet number is now randomized.

h2load

UDP_GRO is enabled for QUIC socket.