fix: allow longer bank account descriptions (#1062)

* Allow longer bank account descriptions

---------

Co-authored-by: Philipp Rothmann <philipprothmann@posteo.de>

db/migrate/20240410093313_change_bank_account_desc.rb

@@ -0,0 +1,9 @@
+class ChangeBankAccountDesc < ActiveRecord::Migration[7.0]
+  def up
+    change_column :bank_accounts, :description, :text
+  end
+
+  def down
+    change_column :bank_accounts, :description, :string
+  end
+end