Activate the bundler gem rake tasks

We’ll use manually releases for this project for now, until we figure out the way to bring it into the automated dry-rb release processes.

Rakefile

@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 
 require "bundler/setup"
+require "bundler/gem_tasks"
 require "rspec/core/rake_task"
 require "rubocop/rake_task"
 require "yard"