Bump puma from 3.8.2 to 4.3.3 in /examples/messenger

examples/messenger/Gemfile.lock

@@ -1,22 +1,7 @@
 GIT
-  remote: git://github.com/tachyons/bmtc.git
-  revision: 9d258bf430469611f7c14a0f66badf65286dc6b4
+  remote: git://github.com/tachyons/botframework-ruby.git
+  revision: c7ff2c736d5a0d1187564158349aa9d6aa7c247e
   branch: master
-  specs:
-    bmtc (0.1.2)
-      httparty
-      json
-
-GIT
-  remote: git://github.com/tachyons/luis.git
-  revision: 3bbb3c08b6e915ef0674ae6e4c4dda6df4920c46
-  branch: master
-  specs:
-    luis (0.1.1beta)
-      httparty
-
-PATH
-  remote: ../..
   specs:
     bot_framework (0.1.0)
       chronic
@@ -29,53 +14,57 @@ PATH
       rb-readline
       timers
 
+GIT
+  remote: git://github.com/tachyons/luis.git
+  revision: 3bbb3c08b6e915ef0674ae6e4c4dda6df4920c46
+  branch: master
+  specs:
+    luis (0.1.1beta)
+      httparty
+
 GEM
   remote: https://rubygems.org/
   specs:
     chronic (0.10.2)
     chronic_duration (0.10.6)
       numerizer (~> 0.1.1)
     coderay (1.1.1)
-    faraday (0.12.2)
+    faraday (1.0.0)
       multipart-post (>= 1.2, < 3)
-    hitimes (1.2.6)
     httparty (0.14.0)
       multi_xml (>= 0.5.2)
-    json (2.1.0)
-    jwt (1.5.6)
+    jwt (2.2.1)
     method_source (0.8.2)
-    multi_json (1.12.2)
+    multi_json (1.14.1)
     multi_xml (0.6.0)
-    multipart-post (2.0.0)
-    nio4r (2.1.0)
+    multipart-post (2.1.1)
+    nio4r (2.5.2)
     numerizer (0.1.1)
-    oauth2 (1.4.0)
-      faraday (>= 0.8, < 0.13)
-      jwt (~> 1.0)
+    oauth2 (1.4.4)
+      faraday (>= 0.8, < 2.0)
+      jwt (>= 1.0, < 3.0)
       multi_json (~> 1.3)
       multi_xml (~> 0.5)
       rack (>= 1.2, < 3)
     pry (0.10.4)
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
       slop (~> 3.4)
-    puma (3.8.2)
-    rack (2.0.1)
+    puma (4.3.3)
+      nio4r (~> 2.0)
+    rack (2.2.2)
     rb-readline (0.5.5)
     slop (3.6.0)
-    timers (4.1.2)
-      hitimes
+    timers (4.3.0)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  bmtc!
   bot_framework!
   luis!
   pry
   puma
-  rack
 
 RUBY VERSION
    ruby 2.4.0p0