package/libdmtx: bump to version 0.7.8

For change log, see:
https://github.com/dmtx/libdmtx/compare/v0.7.7...v0.7.8

Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libdmtx/libdmtx.hash

@@ -1,3 +1,3 @@
 # Locally computed:
-sha256  7aa62adcefdd6e24bdabeb82b3ce41a8d35f4a0c95ab0c4438206aecafd6e1a1  libdmtx-0.7.7.tar.gz
+sha256  2394bf1d1d693a5a4ca3cfcc1bb28a4d878bdb831ea9ca8f3d5c995d274bdc39  libdmtx-0.7.8.tar.gz
 sha256  fcc277b7302645322c63de22b9b0bdae2df3dfa7d6cbc0d5bed7a4d3f1a9af79  LICENSE

package/libdmtx/libdmtx.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-LIBDMTX_VERSION = 0.7.7
+LIBDMTX_VERSION = 0.7.8
 LIBDMTX_SITE = $(call github,dmtx,libdmtx,v$(LIBDMTX_VERSION))
 LIBDMTX_LICENSE = BSD-2-Clause or Special Permission
 LIBDMTX_LICENSE_FILES = LICENSE