ngtcp2: update to 1.20.0.

    Refactor Dockerfile with heredoc by @tatsuhiro-t in #1974
    docker: Bump debian to 13 by @tatsuhiro-t in #1975
    frame_chain: Use a flag to determine the allocation type by @tatsuhiro-t in #1976
    Optimize ngtcp2_frame_chain creation by @tatsuhiro-t in #1977
    examples: Avoid strict aliasing violation by @tatsuhiro-t in #1979
    doc: Update TLS integration document by @tatsuhiro-t in #1980
    Use NGTCP2_PATH_CHALLENGE_DATALEN by @tatsuhiro-t in #1982
    Introduce ngtcp2_strlen_lit by @tatsuhiro-t in #1983
    Fix sim test failure with loss by @tatsuhiro-t in #1984
    Update doc by @tatsuhiro-t in #1985
    Remove ksl from ngtcp2_ksl_it by @tatsuhiro-t in #1986
    ksl: Adjust NGTCP2_KSL_DEGR by @tatsuhiro-t in #1987
    strm: Raise streamfrq limit to cope with large packet losses by @tatsuhiro-t in #1988
    Simplify return value check by @tatsuhiro-t in #1989
    Increase glitch ratelim as originally suggested by user by @tatsuhiro-t in #1990
    examples: Add eventcb to Sim by @tatsuhiro-t in #1991
    Designated init by @tatsuhiro-t in #1992
    Rearrange field to make them pack better by @tatsuhiro-t in #1993
    ksl: Remove dead code by @tatsuhiro-t in #1995
    Revert "ksl: Remove dead code" by @tatsuhiro-t in #1996
    ksl: Avoid extra ksl->compar by copying the existing key on split by @tatsuhiro-t in #1997
    ksl: Remove from head if it is leaf by @tatsuhiro-t in #1998
    ksl: Rename head to root by @tatsuhiro-t in #1999
    Reclaim extra packet for Initial on PTO by @tatsuhiro-t in #2000
    Bump boringssl by @tatsuhiro-t in #2001
    Bump aws-lc to v1.66.2 by @tatsuhiro-t in #2002
    Only reclaim 2 packets for client Initials by @tatsuhiro-t in #2003

Author: 0-wiz-0

net/ngtcp2/Makefile

@@ -1,6 +1,6 @@
-# $NetBSD: Makefile,v 1.32 2025/12/25 16:24:49 adam Exp $
+# $NetBSD: Makefile,v 1.33 2026/01/25 23:08:03 wiz Exp $
 
-DISTNAME=	ngtcp2-1.19.0
+DISTNAME=	ngtcp2-1.20.0
 CATEGORIES=	net
 MASTER_SITES=	${MASTER_SITE_GITHUB:=ngtcp2/}
 GITHUB_RELEASE=	v${PKGVERSION_NOREV}

net/ngtcp2/PLIST

@@ -1,4 +1,4 @@
-@comment $NetBSD: PLIST,v 1.28 2025/12/25 16:24:49 adam Exp $
+@comment $NetBSD: PLIST,v 1.29 2026/01/25 23:08:03 wiz Exp $
 include/ngtcp2/ngtcp2.h
 include/ngtcp2/version.h
 lib/cmake/ngtcp2/ngtcp2Config.cmake
@@ -8,6 +8,6 @@ lib/cmake/ngtcp2/ngtcp2Targets.cmake
 lib/libngtcp2.a
 lib/libngtcp2.so
 lib/libngtcp2.so.16
-lib/libngtcp2.so.16.7.2
+lib/libngtcp2.so.16.7.3
 lib/pkgconfig/libngtcp2.pc
 share/doc/ngtcp2/README.rst

net/ngtcp2/distinfo

@@ -1,5 +1,5 @@
-$NetBSD: distinfo,v 1.31 2025/12/25 16:24:49 adam Exp $
+$NetBSD: distinfo,v 1.32 2026/01/25 23:08:03 wiz Exp $
 
-BLAKE2s (ngtcp2-1.19.0.tar.xz) = a8b90c9687e62844e306750db729b3c36a4901c44eb4ea4aaa5b5ae41a2e702d
-SHA512 (ngtcp2-1.19.0.tar.xz) = db6b69fa627297e37d804cae8ea04aacef2f666f3696ab347297a1a39c48073aedea128885c974e13ebaa52c112e23c12fcee93846f11c0b5c9d1cdb354d6f0e
-Size (ngtcp2-1.19.0.tar.xz) = 686448 bytes
+BLAKE2s (ngtcp2-1.20.0.tar.xz) = e38d5675ef7dcf5d4ef52c8ff7d489689f41f0e5ed3150275c5b1fe16a5a181c
+SHA512 (ngtcp2-1.20.0.tar.xz) = 2366b6ae29664617776c901b05976a5cbd5443da8051854ce6c6e7b7779f5630bc2638a97144f4090a0e140a1a7607460b0b738cf55128d9e3bf31f872db26a8
+Size (ngtcp2-1.20.0.tar.xz) = 684060 bytes