Update gems.

Fixes a showstopper bug in rack-2.2.0 that prevents puma from booting.

Gemfile.lock

@@ -80,7 +80,7 @@ GEM
       sshkit (>= 1.6.1, != 1.7.0)
     awesome_print (1.8.0)
     aws-eventstream (1.0.3)
-    aws-partitions (1.271.0)
+    aws-partitions (1.272.0)
     aws-sdk-core (3.89.1)
       aws-eventstream (~> 1.0, >= 1.0.2)
       aws-partitions (~> 1, >= 1.239.0)
@@ -124,7 +124,7 @@ GEM
     childprocess (3.0.0)
     chronic (0.10.2)
     coderay (1.1.2)
-    concurrent-ruby (1.1.5)
+    concurrent-ruby (1.1.6)
     connection_pool (2.2.2)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
@@ -237,9 +237,9 @@ GEM
     net-ssh (5.2.0)
     newrelic_rpm (6.8.0.360)
     nio4r (2.5.2)
-    nokogiri (1.10.7)
+    nokogiri (1.10.8)
       mini_portile2 (~> 2.4.0)
-    nokogiri (1.10.7-x64-mingw32)
+    nokogiri (1.10.8-x64-mingw32)
       mini_portile2 (~> 2.4.0)
     nokogumbo (2.0.2)
       nokogiri (~> 1.8, >= 1.8.4)
@@ -266,7 +266,7 @@ GEM
     public_suffix (4.0.3)
     puma (4.3.1)
       nio4r (~> 2.0)
-    rack (2.2.0)
+    rack (2.2.2)
     rack-contrib (2.1.0)
       rack (~> 2.0)
     rack-mini-profiler (1.1.6)
@@ -362,7 +362,7 @@ GEM
     stackprof (0.2.15)
     streamio-ffmpeg (3.0.2)
       multi_json (~> 1.8)
-    stripe (5.14.0)
+    stripe (5.15.0)
     thor (1.0.1)
     thread_safe (0.3.6)
     tilt (2.0.10)