Add ruby-vips in the :development group (#959)

* Add `ruby-vips` in the `:development, :test` group

This (mostly) fixes the problem reported in bullet-train-co/bullet_train-core#464

However, due to bullet-train-co/bullet_train-core#498 we don't currently try to show
a user profile photo if we're using ActiveStorage instead of Cloudinary.

Here's some context about why we need to add this directly to the
`Gemfile`.
libvips/ruby-vips#155 (comment)

* Try it here

Author: jagthedrummer

Gemfile

@@ -76,6 +76,10 @@ group :development do
 
   # Speed up commands on slow machines / big apps [https://github.com/rails/spring]
   # gem "spring"
+
+  # Workaround to get image process to behave on a Mac in development
+  # https://github.com/libvips/ruby-vips/issues/155#issuecomment-1047370993
+  gem "ruby-vips"
 end
 
 group :test do

Gemfile.lock

@@ -657,6 +657,7 @@ DEPENDENCIES
   rails_best_practices
   redis (~> 5.0.5)
   rqrcode
+  ruby-vips
   selenium-webdriver
   sentry-rails
   sentry-ruby