Support Ruby 3.3

[gbp]

Due out next week. 🎄

[gbp]

Warnings:

/home/runner/work/alaveteli/alaveteli/vendor/bundle/ruby/3.3.0+0/gems/activesupport-7.0.8/lib/active_support/message_verifier.rb:4: warning: base64 was loaded from the standard library, but will no longer be part of the default gems since Ruby 3.4.0. Add base64 to your Gemfile or gemspec.
/home/runner/work/alaveteli/alaveteli/vendor/bundle/ruby/3.3.0+0/gems/activesupport-7.0.8/lib/active_support/core_ext/object/json.rb:5: warning: bigdecimal was loaded from the standard library, but will no longer be part of the default gems since Ruby 3.4.0. Add bigdecimal to your Gemfile or gemspec.
/home/runner/work/alaveteli/alaveteli/vendor/bundle/ruby/3.3.0+0/gems/activesupport-7.0.8/lib/active_support/notifications/fanout.rb:3: warning: mutex_m was loaded from the standard library, but will no longer be part of the default gems since Ruby 3.4.0. Add mutex_m to your Gemfile or gemspec.
/home/runner/work/alaveteli/alaveteli/vendor/bundle/ruby/3.3.0+0/gems/mail-2.8.1/lib/mail.rb:9: warning: net/smtp was loaded from the standard library, but is not part of the default gems since Ruby 3.1.0. Add net-smtp to your Gemfile or gemspec.
/home/runner/work/alaveteli/alaveteli/vendor/bundle/ruby/3.3.0+0/gems/factory_bot-6.4.2/lib/factory_bot/evaluation.rb:1: warning: observer was loaded from the standard library, but will no longer be part of the default gems since Ruby 3.4.0. Add observer to your Gemfile or gemspec.
/home/runner/work/alaveteli/alaveteli/vendor/bundle/ruby/3.3.0+0/gems/zeitwerk-2.6.12/lib/zeitwerk/kernel.rb:38: warning: csv was loaded from the standard library, but will no longer be part of the default gems since Ruby 3.4.0. Add csv to your Gemfile or gemspec.
/home/runner/work/alaveteli/alaveteli/vendor/bundle/ruby/3.3.0+0/gems/zeitwerk-2.6.12/lib/zeitwerk/kernel.rb:38: warning: net/imap was loaded from the standard library, but is not part of the default gems since Ruby 3.1.0. Add net-imap to your Gemfile or gemspec.
/home/runner/work/alaveteli/alaveteli/vendor/bundle/ruby/3.3.0+0/gems/zeitwerk-2.6.12/lib/zeitwerk/kernel.rb:38: warning: net/pop was loaded from the standard library, but is not part of the default gems since Ruby 3.1.0. Add net-pop to your Gemfile or gemspec.