package/haproxy: security bump to version 2.6.15

Fix CVE-2023-40225: HAProxy through 2.0.32, 2.1.x and 2.2.x through
2.2.30, 2.3.x and 2.4.x through 2.4.23, 2.5.x and 2.6.x before 2.6.15,
2.7.x before 2.7.10, and 2.8.x before 2.8.2 forwards empty
Content-Length headers, violating RFC 9110 section 8.6. In uncommon
cases, an HTTP/1 server behind HAProxy may interpret the payload as an
extra request.

https://www.mail-archive.com/haproxy@formilux.org/msg43864.html

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit 8fc24fbd173a3d7565d3b3db4adebcb2244568a5)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/haproxy/haproxy.hash

@@ -1,5 +1,5 @@
-# From: http://www.haproxy.org/download/2.6/src/haproxy-2.6.14.tar.gz.sha256
-sha256  bd3dd9fa60391ca09e1225e1ac3163e45be83c3f54f2fd76a30af289cc6e4fd4  haproxy-2.6.14.tar.gz
+# From: http://www.haproxy.org/download/2.6/src/haproxy-2.6.15.tar.gz.sha256
+sha256  41f8e1695e92fafdffe39690a68993f1a0f5f7f06931a99e9a153f749ea39cfd  haproxy-2.6.15.tar.gz
 # Locally computed:
 sha256  0717ca51fceaa25ac9e5ccc62e0c727dcf27796057201fb5fded56a25ff6ca28  LICENSE
 sha256  5df07007198989c622f5d41de8d703e7bef3d0e79d62e24332ee739a452af62a  doc/lgpl.txt

package/haproxy/haproxy.mk

@@ -5,7 +5,7 @@
 ################################################################################
 
 HAPROXY_VERSION_MAJOR = 2.6
-HAPROXY_VERSION = $(HAPROXY_VERSION_MAJOR).14
+HAPROXY_VERSION = $(HAPROXY_VERSION_MAJOR).15
 HAPROXY_SITE = http://www.haproxy.org/download/$(HAPROXY_VERSION_MAJOR)/src
 HAPROXY_LICENSE = GPL-2.0+ and LGPL-2.1+ with exceptions
 HAPROXY_LICENSE_FILES = LICENSE doc/lgpl.txt doc/gpl.txt