💄 Update test assertions and directory fixture

Refine test assertions in HomeControllerTest and update directory fixture values for better clarity and accuracy. :lipstick: Add safe URL helper to prevent XSS attacks Introduce a new `safe_url` method to sanitize URLs and ensure only safe protocols are used. Update link helpers in user and directory submission views to utilize this new method. :arrow_up: Upgrade dependencies in Gemfile.lock Update various gems to their latest versions for improved performance and security.