syslog-ng: update to version 3.38.1

- Release notes:
https://github.com/syslog-ng/syslog-ng/releases/tag/syslog-ng-3.38.1

- Update the configuration file to use version 4.0 as mentioned in the
  release notes to try the latest changes

Fixes: CVE-2022-38725

Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>
(cherry picked from commit 34b7af9e08)

admin/syslog-ng/Makefile

@@ -1,7 +1,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=syslog-ng
-PKG_VERSION:=3.37.1
+PKG_VERSION:=3.38.1
 PKG_RELEASE:=$(AUTORELEASE)
 
 PKG_MAINTAINER:=Josef Schlehofer <josef.schlehofer@nic.cz>
@@ -11,7 +11,7 @@ PKG_CPE_ID:=cpe:/a:balabit:syslog-ng
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://github.com/syslog-ng/syslog-ng/releases/download/$(PKG_NAME)-$(PKG_VERSION)/
-PKG_HASH:=d67a320cb896cd5d62f24d9e1bec138847fa4618ae13a3946cae2b75c528ee14
+PKG_HASH:=5491f686d0b829b69b2e0fc0d66a62f51991aafaee005475bfa38fab399441f7
 
 PKG_BUILD_PARALLEL:=1
 PKG_INSTALL:=1

admin/syslog-ng/files/syslog-ng.conf

@@ -4,7 +4,7 @@
 # More details about these settings can be found here:
 # https://www.syslog-ng.com/technical-documents/list/syslog-ng-open-source-edition
 
-@version: 3.37
+@version: 4.0
 @include "scl.conf"
 
 options {