lighttpd: bump version

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/lighttpd/lighttpd.mk

@@ -4,7 +4,7 @@
 #
 #############################################################
 
-LIGHTTPD_VERSION = 1.4.26
+LIGHTTPD_VERSION = 1.4.28
 LIGHTTPD_SITE = http://download.lighttpd.net/lighttpd/releases-1.4.x
 LIGHTTPD_LIBTOOL_PATCH = NO