upgrade puma, kaminari and rack

Gemfile.lock

@@ -108,7 +108,7 @@ GEM
       tilt
     hashie (3.6.0)
     highline (2.0.0)
-    i18n (1.8.2)
+    i18n (1.8.3)
       concurrent-ruby (~> 1.0)
     jquery-rails (4.3.3)
       rails-dom-testing (>= 1, < 3)
@@ -116,19 +116,19 @@ GEM
       thor (>= 0.14, < 2.0)
     json (1.8.6)
     jwt (2.1.0)
-    kaminari (1.1.1)
+    kaminari (1.2.1)
       activesupport (>= 4.1.0)
-      kaminari-actionview (= 1.1.1)
-      kaminari-activerecord (= 1.1.1)
-      kaminari-core (= 1.1.1)
-    kaminari-actionview (1.1.1)
+      kaminari-actionview (= 1.2.1)
+      kaminari-activerecord (= 1.2.1)
+      kaminari-core (= 1.2.1)
+    kaminari-actionview (1.2.1)
       actionview
-      kaminari-core (= 1.1.1)
-    kaminari-activerecord (1.1.1)
+      kaminari-core (= 1.2.1)
+    kaminari-activerecord (1.2.1)
       activerecord
-      kaminari-core (= 1.1.1)
-    kaminari-core (1.1.1)
-    loofah (2.4.0)
+      kaminari-core (= 1.2.1)
+    kaminari-core (1.2.1)
+    loofah (2.6.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     marcel (0.3.3)
@@ -137,7 +137,7 @@ GEM
     mimemagic (0.3.4)
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
-    minitest (5.14.0)
+    minitest (5.14.1)
     mongo (2.6.2)
       bson (>= 4.3.0, < 5.0.0)
     moonrope (2.0.1)
@@ -151,11 +151,11 @@ GEM
       activerecord (>= 3.0.0)
       activesupport (>= 3.0.0)
     nio4r (2.5.2)
-    nokogiri (1.10.9)
+    nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
-    puma (4.3.3)
+    puma (4.3.5)
       nio4r (~> 2.0)
-    rack (2.2.2)
+    rack (2.2.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.4.2)
@@ -236,7 +236,7 @@ GEM
     turbolinks (5.2.0)
       turbolinks-source (~> 5.2)
     turbolinks-source (5.2.0)
-    tzinfo (1.2.6)
+    tzinfo (1.2.7)
       thread_safe (~> 0.1)
     uglifier (4.1.18)
       execjs (>= 0.3.0, < 3)