Upgrade Rails to 8.0

Gemfile

@@ -2,7 +2,7 @@ source 'https://rubygems.org'
 git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
-gem 'rails', '~> 7.2'
+gem 'rails', '~> 8.0'
 # Use Puma as the app server
 gem 'puma', '~> 4.1'
 # View components
@@ -68,7 +68,7 @@ gem 'nostr', '~> 0.6.0'
 
 group :development, :test do
   # Use sqlite3 as the database for Active Record
-  gem 'sqlite3', '~> 1.7.2'
+  gem 'sqlite3', '>= 2.1'
   gem 'rspec-rails'
   gem 'rails-controller-testing'
 end