[ruby/roda] Use Ruby 3.4-rc (#9067)

|       name|              branch_name|plaintext|update|  json|   db|query|fortune|weighted_score|
|-----------|-------------------------|---------|------|------|-----|-----|-------|--------------|
|roda-sequel|                   master|   112094| 10588|111179|33741|18274|  23871|          1406|
|roda-sequel|         roda/ruby-3.4-rc|   124965| 10745|108288|46846|21523|  27565|          1524|

frameworks/Ruby/roda-sequel/roda-sequel-postgres-unicorn-mri.dockerfile

@@ -1,4 +1,4 @@
-FROM ruby:3.3
+FROM ruby:3.4-rc
 
 ADD ./ /roda-sequel
 WORKDIR /roda-sequel

frameworks/Ruby/roda-sequel/roda-sequel-postgres.dockerfile

@@ -1,4 +1,4 @@
-FROM ruby:3.3
+FROM ruby:3.4-rc
 
 ADD ./ /roda-sequel
 WORKDIR /roda-sequel

frameworks/Ruby/roda-sequel/roda-sequel-unicorn-mri.dockerfile

@@ -1,4 +1,4 @@
-FROM ruby:3.3
+FROM ruby:3.4-rc
 
 ADD ./ /roda-sequel
 WORKDIR /roda-sequel

frameworks/Ruby/roda-sequel/roda-sequel.dockerfile

@@ -1,4 +1,4 @@
-FROM ruby:3.3
+FROM ruby:3.4-rc
 
 ADD ./ /roda-sequel
 WORKDIR /roda-sequel