gzip: bump version to 1.8

Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/gzip/gzip.hash

@@ -1,2 +1,2 @@
 # Locally calculated after checking pgp signature
-sha256	fb31c57e7ce7703596ef57329be7cc5c5fd741b4a0f659fea7ee6a54706b41ab  gzip-1.7.tar.xz
+sha256 ff1767ec444f71e5daf8972f6f8bf68cfcca1d2f76c248eb18e8741fc91dbbd3  gzip-1.8.tar.xz

package/gzip/gzip.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-GZIP_VERSION = 1.7
+GZIP_VERSION = 1.8
 GZIP_SOURCE = gzip-$(GZIP_VERSION).tar.xz
 GZIP_SITE = $(BR2_GNU_MIRROR)/gzip
 # Some other tools expect it to be in /bin