Bump puma from 5.6.9 to 7.2.1

Bumps [puma](https://github.com/puma/puma) from 5.6.9 to 7.2.1.
- [Release notes](https://github.com/puma/puma/releases)
- [Changelog](https://github.com/puma/puma/blob/main/History.md)
- [Commits](puma/puma@v5.6.9...v7.2.1)

---
updated-dependencies:
- dependency-name: puma
  dependency-version: 7.2.1
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Gemfile

@@ -9,7 +9,7 @@ ruby "3.2.3" # TODO: use file: '.tool-versions' when heroku supports it. (bundle
 gem "rails", "6.1.7.7"
 
 # Production app server
-gem "puma", "~> 5"
+gem "puma", "~> 7"
 gem "pg", "~> 1.5"
 
 # Front-end Assets

Gemfile.lock

@@ -312,7 +312,7 @@ GEM
       timeout
     net-smtp (0.4.0.1)
       net-protocol
-    nio4r (2.7.3)
+    nio4r (2.7.5)
     nokogiri (1.18.9)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
@@ -371,7 +371,7 @@ GEM
     psych (5.1.2)
       stringio
     public_suffix (5.0.3)
-    puma (5.6.9)
+    puma (7.2.1)
       nio4r (~> 2.0)
     racc (1.8.1)
     rack (2.2.23)
@@ -596,7 +596,7 @@ DEPENDENCIES
   pronto-flay
   pronto-haml
   pronto-rubocop
-  puma (~> 5)
+  puma (~> 7)
   rack-mini-profiler (~> 2.0)
   rails (= 6.1.7.7)
   rails-controller-testing