Merge pull request #2914 from arangodb-helper/new_arangodb_version_3.1.19

Please upgrade to the ArangoDB Release 3.1.19

library/arangodb

@@ -5,6 +5,6 @@
 2.8.11: git://github.com/arangodb/arangodb-docker@05366cb4c6a6aab8e1ff9ca74c81b09d9a57b5b5 jessie/2.8.11
 
 
-3.1: git://github.com/arangodb/arangodb-docker@ac8500ecdf4b61038deb0240c488ddcdf359f76f jessie/3.1.18
-3.1.18: git://github.com/arangodb/arangodb-docker@ac8500ecdf4b61038deb0240c488ddcdf359f76f jessie/3.1.18
-latest: git://github.com/arangodb/arangodb-docker@ac8500ecdf4b61038deb0240c488ddcdf359f76f jessie/3.1.18
+3.1: git://github.com/arangodb/arangodb-docker@b4d868772f3f92c1ebe50568bd650cee8f34e9cc jessie/3.1.19
+3.1.19: git://github.com/arangodb/arangodb-docker@b4d868772f3f92c1ebe50568bd650cee8f34e9cc jessie/3.1.19
+latest: git://github.com/arangodb/arangodb-docker@b4d868772f3f92c1ebe50568bd650cee8f34e9cc jessie/3.1.19