s6-linux-init: update license hash

Copyright year update.

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

package/s6-linux-init/s6-linux-init.hash

@@ -1,3 +1,3 @@
 # Locally generated
 sha256 d4ac9b8bde3e678353c85dad1a2a25066a40f843c53840c4210839068635ed7e  s6-linux-init-0.4.0.0.tar.gz
-sha256 43cdbc05eceb0781d71a0661bbb6b9335efc4b733fbd02847c0c6667fd440993  COPYING
+sha256 1377d3b18a31de11e8bb06f0f46888a23bc16cbc57285035793bf7e7943bbcb3  COPYING