First RC of the KF 1.5 release 🎉

What's new ✨

• Change namespace label for Katib metrics collector injection #6225 @andreyvelich
• Tell user to select a namespace to access namespaced menu item #6181 @toshi-k
• frontend: Use responsive tables instead of cards #6316 @kimwnasptd

What's fixed 🐛

• Secure access to KFAM #6077 @DavidSpek
• fix(backend): tensorboard-controller does not work because of missing permissions #6216 @juliusvonkohout
• fix(notebooks) make culling work with multi-user #5980 @LEDfan
• Centraldashboard/add uncaughtexception handler #6203 @haoxins
• fix dashboard sending malformed headers to kfam #6186 @thesuperzapper