Merge pull request #6135 from swamp09/fix_tailwindcss_rails_v3_to_install_tailwindcss

[Admin] Fix tailwindcss-rails Version to v3 for Solidus Admin Compatibility

Author: tvdeyen

admin/lib/solidus_admin/install_tailwindcss.rb

@@ -8,7 +8,7 @@
 output_path = "app/assets/builds/solidus_admin/tailwind.css"
 
 unless bundle_command "show tailwindcss-rails"
-  bundle_command "add tailwindcss-rails"
+  bundle_command "add tailwindcss-rails --version '~>3.0'"
 end
 
 # Copy the Tailwind CSS main file.