tools: pkgconf: update to 2.5.1

Changelog:
https://github.com/pkgconf/pkgconf/blob/4fc570f91d9d8d843ab32d2198a5c064538d8ffd/NEWS

Link: https://github.com/openwrt/openwrt/pull/19557
Signed-off-by: Nick Hainke <[email protected]>

tools/pkgconf/Makefile

@@ -7,11 +7,11 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=pkgconf
-PKG_VERSION:=2.2.0
+PKG_VERSION:=2.5.1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://distfiles.dereferenced.org/pkgconf
-PKG_HASH:=28f8dfc279a10ef66148befa3f6eb266e5f3570316600208ed50e9781c7269d8
+PKG_HASH:=ab89d59810d9cad5dfcd508f25efab8ea0b1c8e7bad91c2b6351f13e6a5940d8
 
 PKG_CPE_ID:=cpe:/a:pkgconf:pkgconf