Upgrade yara submodule.

plusvic · plusvic · commit a4b5df2cba26 · 2019-09-24T15:29:32.000+02:00
diff --git a/yara b/yara
@@ -1 +1 @@
-Subproject commit 75babbc0248f14b3ecb135c88d592268f1c1edce
+Subproject commit 4bdad16c167de43c407c330b2714cc5d98e04491
