execline: update license hash

Copyright year update.

Fixes:
http://autobuild.buildroot.net/results/6f0dcacbba4abd48927ccae044c32e07a96a50a4/

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/execline/execline.hash

@@ -1,3 +1,3 @@
 # Locally generated
 sha256 f6993094766652041c21fde9c07ef53a3cd4b93a64123d9578fb4997a2cefca1  execline-2.5.0.0.tar.gz
-sha256 6ee77e7199d69b707ab864ea7a838f9562717aaa41c89413bdb2cf835f95052f  COPYING
+sha256 3eadcf980c40da0f257b8292d805ff41e5e5a908c1942315d9a627732e1aa012  COPYING