component/libffi: version up 3.4.6

component/libffi/buildout.cfg

@@ -8,9 +8,9 @@ parts =
 [libffi]
 recipe = slapos.recipe.cmmi
 shared = true
-version = 3.4.3
-url = http://sourceware.org/pub/libffi/libffi-${:version}.tar.gz
-md5sum = b57b0ac1d1072681cee9148a417bd2ec
+version = 3.4.6
+url = https://github.com/libffi/libffi/releases/download/v${:version}/libffi-${:version}.tar.gz
+md5sum = b9cac6c5997dca2b3787a59ede34e0eb
 location = @@LOCATION@@
 patch-options = -p1
 patches =