Update gems.

Gemfile.lock

@@ -10,12 +10,12 @@ GEM
   specs:
     addressable (2.7.0)
       public_suffix (>= 2.0.2, < 5.0)
-    airbrake (10.0.4)
+    airbrake (10.0.5)
       airbrake-ruby (~> 4.13)
-    airbrake-ruby (4.14.1)
+    airbrake-ruby (4.15.0)
       rbtree3 (~> 0.5)
-    backports (3.17.2)
-    coderay (1.1.2)
+    backports (3.18.1)
+    coderay (1.1.3)
     concurrent-ruby (1.1.6)
     crass (1.0.6)
     dotenv (2.7.5)
@@ -28,15 +28,15 @@ GEM
     io-console (0.5.6)
     irb (1.2.4)
       reline (>= 0.0.1)
-    loofah (2.5.0)
+    loofah (2.6.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     method_source (1.0.0)
     mini_portile2 (2.4.0)
     multi_json (1.14.1)
     mustermann (1.1.1)
       ruby2_keywords (~> 0.0.1)
-    newrelic_rpm (6.10.0.364)
+    newrelic_rpm (6.11.0.365)
     nio4r (2.5.2)
     nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
@@ -54,20 +54,20 @@ GEM
     public_suffix (4.0.5)
     puma (4.3.5)
       nio4r (~> 2.0)
-    rack (2.2.2)
+    rack (2.2.3)
     rack-protection (2.0.8.1)
       rack
     rack-ssl-enforcer (0.2.9)
     rake (13.0.1)
     rbtree3 (0.6.0)
-    redis (4.1.4)
+    redis (4.2.1)
     redis-namespace (1.7.0)
       redis (>= 3.0.4)
     reline (0.1.4)
       io-console (~> 0.5)
     ruby2_keywords (0.0.2)
     sax-machine (1.3.2)
-    secure_headers (6.3.0)
+    secure_headers (6.3.1)
     sinatra (2.0.8.1)
       mustermann (~> 1.0)
       rack (~> 2.0)