Update realm sync to 1.6.0

core to 2.6.1
Fix #4461

CHANGELOG.md

@@ -7,10 +7,12 @@
 * Now throws `IllegalStateException` when a getter of linking objects is called against deleted or not yet loaded `RealmObject`s (#4499).
 * `NullPointerException` caused by local transaction inside the listener of `findFirstAsync()`'s results (#4495).
 * Native crash when adding listeners to `RealmObject` after removing listeners from the same `RealmObject` before (#4502).
+* Native crash with "Invalid argument" error happened on some Android 7.1.1 devices when opening Realm on external storage (#4461).
 
 ### Internal
 
-* Upgraded to Realm Sync 1.5.2.
+* Upgraded to Realm Sync 1.6.0.
+* Upgraded to Realm Core 2.6.1.
 
 ## 3.1.2 (2017-04-12)
 

dependencies.list

@@ -1,7 +1,7 @@
 # Realm Sync Core release used by Realm Java
 # https://github.com/realm/realm-sync/releases
-REALM_SYNC_VERSION=1.5.2
-REALM_SYNC_SHA256=e7a0134b5b69c5a571e3f49901bb8d8ca634b166873c5a422909e7d2016a00e7
+REALM_SYNC_VERSION=1.6.0
+REALM_SYNC_SHA256=e8a973dbe6ab33ac49d3d0e45d6b63d69cec8d1d87d9a2311fcdd02767f76cf8
 
 # Object Server Release used by Integration tests
 # `realm` is stable releases, `realm-testing` is developer builds.
@@ -10,4 +10,4 @@ REALM_SYNC_SHA256=e7a0134b5b69c5a571e3f49901bb8d8ca634b166873c5a422909e7d2016a00
 # /tools/sync_test_server/Dockerfile specify which repo (apt) we should
 # install/use between 'realm' and 'realm-testing', the version below should
 # correspond to an existing version on the *specified* repo.
-REALM_OBJECT_SERVER_DE_VERSION=1.3.0-294
+REALM_OBJECT_SERVER_DE_VERSION=1.4.1-305