Update gems.

Gemfile.lock

@@ -3,7 +3,7 @@ GEM
   specs:
     addressable (2.7.0)
       public_suffix (>= 2.0.2, < 5.0)
-    airbrake (9.4.3)
+    airbrake (9.4.4)
       airbrake-ruby (~> 4.6)
     airbrake-ruby (4.6.0)
       rbtree3 (~> 0.5)
@@ -15,20 +15,20 @@ GEM
     feedjira (3.0.0)
       loofah (>= 2.2.1)
       sax-machine (>= 1.0)
-    github-release-party (0.3.2)
+    github-release-party (0.3.3)
       addressable (~> 2)
-      rake (~> 12)
+      rake (>= 12)
     heroku-env (0.1.4)
     irb (1.0.0)
-    loofah (2.2.3)
+    loofah (2.3.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     method_source (0.9.2)
     mini_portile2 (2.4.0)
     multi_json (1.13.1)
     mustermann (1.0.3)
-    newrelic_rpm (6.5.0.357)
-    nio4r (2.5.1)
+    newrelic_rpm (6.6.0.358)
+    nio4r (2.5.2)
     nokogiri (1.10.4)
       mini_portile2 (~> 2.4.0)
     opengraph_parser (0.2.3)
@@ -52,9 +52,9 @@ GEM
     rack-protection (2.0.7)
       rack
     rack-ssl-enforcer (0.2.9)
-    rake (12.3.3)
+    rake (13.0.0)
     rbtree3 (0.5.0)
-    redis (4.1.2)
+    redis (4.1.3)
     redis-namespace (1.6.0)
       redis (>= 3.0.4)
     sax-machine (1.3.2)
@@ -73,7 +73,7 @@ GEM
       tilt (~> 2.0)
     slop (3.6.0)
     thor (0.20.3)
-    tilt (2.0.9)
+    tilt (2.0.10)
     tzinfo (2.0.0)
       concurrent-ruby (~> 1.0)
     yajl-ruby (1.4.1)