libzip: update legal hash for 1.4.0

The copyright was updated in the LICENSES file

Fixes (one of many):
http://autobuild.buildroot.net/results/a64/a64ddf630aa44c7b0353f5a6818beffd20712615/

Signed-off-by: Matthew Weber <matthew.weber@rockwellcollins.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libzip/libzip.hash

@@ -1,3 +1,3 @@
 # Locally calculated
 sha256	e508aba025f5f94b267d5120fc33761bcd98440ebe49dbfe2ed3df3afeacc7b1  libzip-1.4.0.tar.xz
-sha256  d159ae325ca0b8236c44dfd980ca99810dbcfc057b077c50dbbda1131cbd263a  LICENSE
+sha256  3c964a7eb1abeb6bd6f40035ed3a014728ff8c5437f107dcf24fbbfab16e227e  LICENSE