Bump puma from 5.6.7 to 5.6.8

Bumps [puma](https://github.com/puma/puma) from 5.6.7 to 5.6.8.
- [Release notes](https://github.com/puma/puma/releases)
- [Changelog](https://github.com/puma/puma/blob/master/History.md)
- [Commits](puma/puma@v5.6.7...v5.6.8)

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

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

Author: dependabot[bot]

Gemfile

@@ -13,7 +13,7 @@ gem 'jbuilder'
 gem 'jquery-rails'
 gem 'omniauth-cas'
 gem 'pg', '~> 1.4.6'
-gem 'puma', '~> 5.0'
+gem 'puma', '~> 5.6'
 gem 'rails', '~> 7.0.4', '>= 7.0.4.3'
 gem 'rsolr', '>= 1.0', '< 3'
 gem 'sassc-rails', '~> 2.1'

Gemfile.lock

@@ -301,7 +301,7 @@ GEM
     psych (5.1.1.1)
       stringio
     public_suffix (5.0.4)
-    puma (5.6.7)
+    puma (5.6.8)
       nio4r (~> 2.0)
     racc (1.7.3)
     rack (2.2.8)
@@ -498,7 +498,7 @@ DEPENDENCIES
   jquery-rails
   omniauth-cas
   pg (~> 1.4.6)
-  puma (~> 5.0)
+  puma (~> 5.6)
   rails (~> 7.0.4, >= 7.0.4.3)
   rsolr (>= 1.0, < 3)
   rspec-rails