bundle update paperclip because of CVE-2017-0889

Gemfile.lock

@@ -120,7 +120,8 @@ GEM
       temple (>= 0.8.0)
       tilt
     heapy (0.1.3)
-    i18n (0.8.6)
+    i18n (0.9.3)
+      concurrent-ruby (~> 1.0)
     i18n-js (3.0.1)
       i18n (~> 0.6, >= 0.6.6)
     jbuilder (2.7.0)
@@ -162,7 +163,7 @@ GEM
     mimemagic (0.3.2)
     mini_mime (0.1.4)
     mini_portile2 (2.3.0)
-    minitest (5.10.3)
+    minitest (5.11.1)
     mongo (2.4.3)
       bson (>= 4.2.1, < 5.0.0)
     mongoid (5.0.2)
@@ -190,7 +191,7 @@ GEM
       mini_portile2 (~> 2.3.0)
     origin (2.3.1)
     orm_adapter (0.5.0)
-    paperclip (5.1.0)
+    paperclip (5.2.0)
       activemodel (>= 4.2.0)
       activesupport (>= 4.2.0)
       cocaine (~> 0.5.5)
@@ -335,7 +336,7 @@ GEM
     thor (0.20.0)
     thread_safe (0.3.6)
     tilt (2.0.8)
-    tzinfo (1.2.3)
+    tzinfo (1.2.4)
       thread_safe (~> 0.1)
     uglifier (3.2.0)
       execjs (>= 0.3.0, < 3)