bison: bump to version 3.0.4

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/bison/bison.hash

@@ -1,2 +1,2 @@
 # Locally calculated after checking pgp signature
-sha256	5940efbdd6b5d80e55ec16a01d2322e2892da21863391049b9b692570649177c	bison-3.0.3.tar.xz
+sha256	a72428c7917bdf9fa93cb8181c971b6e22834125848cf1d03ce10b1bb0716fe1	bison-3.0.4.tar.xz

package/bison/bison.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-BISON_VERSION = 3.0.3
+BISON_VERSION = 3.0.4
 BISON_SOURCE = bison-$(BISON_VERSION).tar.xz
 BISON_SITE = $(BR2_GNU_MIRROR)/bison
 BISON_LICENSE = GPLv3+