updated flex hello world app

Author: srinjoyray

appengine/flexible/hello_world/Gemfile

@@ -19,9 +19,12 @@ gem "sinatra"
 gem "webrick", "~> 1.8"
 
 # [END gae_flex_quickstart_dependencies]
-ruby "~>3.2"
+ruby "~>3.4"
 group :test do
   gem "rack-test"
   gem "rspec"
   gem "rspec_junit_formatter"
 end
+
+gem "rackup", "~> 2.2"
+gem "puma", "~> 6.6"

appengine/flexible/hello_world/Gemfile.lock

@@ -1,50 +1,67 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    diff-lcs (1.5.0)
-    mustermann (3.0.0)
+    base64 (0.2.0)
+    diff-lcs (1.6.1)
+    logger (1.7.0)
+    mustermann (3.0.3)
       ruby2_keywords (~> 0.0.1)
-    rack (2.2.8.1)
-    rack-protection (3.1.0)
-      rack (~> 2.2, >= 2.2.4)
-    rack-test (2.1.0)
+    nio4r (2.7.4)
+    puma (6.6.0)
+      nio4r (~> 2.0)
+    rack (3.1.13)
+    rack-protection (4.1.1)
+      base64 (>= 0.1.0)
+      logger (>= 1.6.0)
+      rack (>= 3.0.0, < 4)
+    rack-session (2.1.0)
+      base64 (>= 0.1.0)
+      rack (>= 3.0.0)
+    rack-test (2.2.0)
       rack (>= 1.3)
-    rspec (3.12.0)
-      rspec-core (~> 3.12.0)
-      rspec-expectations (~> 3.12.0)
-      rspec-mocks (~> 3.12.0)
-    rspec-core (3.12.2)
-      rspec-support (~> 3.12.0)
-    rspec-expectations (3.12.3)
+    rackup (2.2.1)
+      rack (>= 3)
+    rspec (3.13.0)
+      rspec-core (~> 3.13.0)
+      rspec-expectations (~> 3.13.0)
+      rspec-mocks (~> 3.13.0)
+    rspec-core (3.13.3)
+      rspec-support (~> 3.13.0)
+    rspec-expectations (3.13.3)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.12.0)
-    rspec-mocks (3.12.6)
+      rspec-support (~> 3.13.0)
+    rspec-mocks (3.13.2)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.12.0)
-    rspec-support (3.12.1)
+      rspec-support (~> 3.13.0)
+    rspec-support (3.13.2)
     rspec_junit_formatter (0.6.0)
       rspec-core (>= 2, < 4, != 2.12.0)
     ruby2_keywords (0.0.5)
-    sinatra (3.1.0)
+    sinatra (4.1.1)
+      logger (>= 1.6.0)
       mustermann (~> 3.0)
-      rack (~> 2.2, >= 2.2.4)
-      rack-protection (= 3.1.0)
+      rack (>= 3.0.0, < 4)
+      rack-protection (= 4.1.1)
+      rack-session (>= 2.0.0, < 3)
       tilt (~> 2.0)
-    tilt (2.2.0)
-    webrick (1.8.1)
+    tilt (2.6.0)
+    webrick (1.9.1)
 
 PLATFORMS
   ruby
 
+
 DEPENDENCIES
+  puma (~> 6.6)
   rack-test
+  rackup (~> 2.2)
   rspec
   rspec_junit_formatter
   sinatra
   webrick (~> 1.8)
 
 RUBY VERSION
-   ruby 3.2.2p53
+  ruby 3.4.2
 
 BUNDLED WITH
-   2.4.19
+   2.6.6