[ruby/hanami] Use Ruby 3.5-rc (#10115)

frameworks/Ruby/hanami/Gemfile

@@ -16,3 +16,4 @@ gem "rake"
 gem "rom", "~> 5.3"
 gem "rom-sql", "~> 3.6"
 gem "pg"
+gem "ostruct" # required for Ruby 3.5

frameworks/Ruby/hanami/Gemfile.lock

@@ -119,6 +119,7 @@ GEM
       hansi (~> 0.2.0)
       mustermann (= 3.0.3)
     nio4r (2.7.4)
+    ostruct (0.6.3)
     pg (1.5.9)
     puma (6.6.0)
       nio4r (~> 2.0)
@@ -171,6 +172,7 @@ DEPENDENCIES
   hanami-router (~> 2.2)
   hanami-validations (~> 2.2)
   hanami-view (~> 2.2)
+  ostruct
   pg
   puma
   rake

frameworks/Ruby/hanami/hanami.dockerfile

@@ -1,4 +1,4 @@
-FROM ruby:3.4
+FROM ruby:3.5-rc
 
 ENV RUBY_YJIT_ENABLE=1
 ENV WEB_CONCURRENCY=auto