yara: Update to 3.8.1

Switched URL to codeload. The previous redirects to this one.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

utils/yara/Makefile

@@ -8,13 +8,13 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=yara
-PKG_VERSION:=3.7.1
+PKG_VERSION:=3.8.1
 PKG_RELEASE:=1
 PKG_LICENSE:=BSD-3-Clause
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
-PKG_SOURCE_URL:=https://github.com/VirusTotal/yara/archive/v$(PKG_VERSION)/
-PKG_HASH:=df077a29b0fffbf4e7c575f838a440f42d09b215fcb3971e6fb6360318a64892
+PKG_SOURCE_URL:=https://codeload.github.com/VirusTotal/yara/tar.gz/v$(PKG_VERSION)?
+PKG_HASH:=283527711269354d3c60e2705f7f74b1f769d2d35ddba8f7f9ce97d0fd5cb1ca
 
 PKG_FIXUP:=autoreconf
 PKG_BUILD_PARALLEL:=1