Update gems.

Gemfile.lock

@@ -3,7 +3,7 @@ GEM
   specs:
     addressable (2.7.0)
       public_suffix (>= 2.0.2, < 5.0)
-    airbrake (9.5.4)
+    airbrake (9.5.5)
       airbrake-ruby (~> 4.8)
     airbrake-ruby (4.8.0)
       rbtree3 (~> 0.5)
@@ -19,7 +19,7 @@ GEM
       addressable (~> 2)
       rake (>= 12)
     heroku-env (0.1.4)
-    irb (1.1.0)
+    irb (1.2.0)
       reline (>= 0.0.1)
     loofah (2.4.0)
       crass (~> 1.0.2)
@@ -30,7 +30,7 @@ GEM
     mustermann (1.0.3)
     newrelic_rpm (6.7.0.359)
     nio4r (2.5.2)
-    nokogiri (1.10.5)
+    nokogiri (1.10.7)
       mini_portile2 (~> 2.4.0)
     opengraph_parser (0.2.3)
       addressable
@@ -45,7 +45,7 @@ GEM
       pry (~> 0.9)
       slop (~> 3.0)
     public_suffix (4.0.1)
-    puma (4.3.0)
+    puma (4.3.1)
       nio4r (~> 2.0)
     rack (2.0.7)
     rack-protection (2.0.7)