knot-resolver: update to version 5.7.6

Knot Resolver 5.7.6 (2025-07-17)
================================

Security
--------
- DoS: fix a rare segfault in `resolve` function (!1720)
  Someone controlling the DNS traffic might be able
  to trigger this crash intentionally and too often.
- DoS: drop a wrong assertion/crash (!1721)
  Someone controlling the DNS traffic will most likely be able
  to trigger this crash intentionally and too often.

Knot Resolver 5.7.5 (2025-04-24)
================================

Security
--------
- DoS: fix unconfirmed crashes with the line below (!1683)
  [system] requirement "h && h->end > h->begin" failed in queue_pop_impl

Improvements
------------
- tests: disable problematic config.http test (#925, !1678)
- validator: accept a confusing NODATA proof with insecure delegation (!1678)

Bugfixes
--------
- daemon/http: DoH stream got stuck after returning an error code (!1652)
- stats: request latency was very incorrect in some cases (!1678)

Signed-off-by: Vladimír Čunát <vladimir.cunat@nic.cz>
(cherry picked from commit 4f22b4dceb)

net/knot-resolver/Makefile

@@ -10,12 +10,12 @@ PKG_RELRO_FULL:=0
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=knot-resolver
-PKG_VERSION:=5.7.4
+PKG_VERSION:=5.7.6
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=https://secure.nic.cz/files/knot-resolver
-PKG_HASH:=6b6da6ecf06828041afad44dfa227781f0ae34ad183a667008509355d18bd9c8
+PKG_HASH:=500ccd3a560300e547b8dc5aaff322f7c8e2e7d6f0d7ef5f36e59cb60504d674
 
 PKG_MAINTAINER:=Jan Pavlinec <jan.pavlinec1@gmail.com>
 PKG_LICENSE:=GPL-3.0-later