fix: request header or cookie size too large

* chore: add session store from issue

related to #57

Gemfile

@@ -20,11 +20,13 @@ gem 'omniauth_openid_connect'
 
 gem "wicked_pdf", "~> 2.1"
 
+gem 'activerecord-session_store'
+
 group :development, :test do
   gem "byebug", "~> 11.0", platform: :mri
 
   gem "brakeman"
-  gem "decidim-dev", ENV.fetch("DECIDIM_VERSION", "0.27.3")
+  gem "decidim-dev", ENV.fetch("DECIDIM_VERSION", "0.27.5")
 end
 
 group :development do

config/initializers/session_store.rb

@@ -0,0 +1 @@
+Rails.application.config.session_store :active_record_store, :key => '_decidim_session'

db/migrate/20240118083525_add_sessions_table.rb

@@ -0,0 +1,12 @@
+class AddSessionsTable < ActiveRecord::Migration[6.1]
+  def change
+    create_table :sessions do |t|
+      t.string :session_id, :null => false
+      t.text :data
+      t.timestamps
+    end
+
+    add_index :sessions, :session_id, :unique => true
+    add_index :sessions, :updated_at
+  end
+end