Automated update of couchbase-lite-ios from submodules

Author: Couchbase Build Team

couchbase-lite-ios/helium.xml

@@ -20,7 +20,7 @@
   <!-- Couchbase-owned Couchbase Lite Core                -->
   <!-- ++++++++++++++++++++++++++++++++++++++++++++++++++ -->
   <project name="couchbase-lite-core-EE" remote="couchbase-priv" revision="500a59251601f6c2677719f58f474f670332863b" path="couchbase-lite-ios-ee/couchbase-lite-core-EE" groups="enterprise,notdefault"/>
-  <project name="couchbase-lite-core" revision="2f3397837e884a37d28b2b2ee80326938a4352a0" path="couchbase-lite-ios-ee/couchbase-lite-ios/vendor/couchbase-lite-core"/>
+  <project name="couchbase-lite-core" revision="c557c997a8b0e62835d52f75ba6941ebb2896750" path="couchbase-lite-ios-ee/couchbase-lite-ios/vendor/couchbase-lite-core"/>
   <project name="couchbase-lite-core.wiki" revision="9dd7deb1b42253ea3f50f447718ebf5eb2387394" path="couchbase-lite-ios-ee/couchbase-lite-ios/vendor/couchbase-lite-core/wiki"/>
 
   <!-- ++++++++++++++++++++++++++++++++++++++++++++++++++ -->