cairo: bump to 1.12.12

Bump cairo to version 1.12.12.

Signed-off-by: Eric Le Bihan <eric.le.bihan.dev@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/cairo/cairo.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-CAIRO_VERSION = 1.12.10
+CAIRO_VERSION = 1.12.12
 CAIRO_SOURCE = cairo-$(CAIRO_VERSION).tar.xz
 CAIRO_LICENSE = LGPLv2.1+
 CAIRO_LICENSE_FILES = COPYING