docs: raise required fzf version to 0.60 (#515)

Author: sandr01d

README.md

@@ -80,7 +80,7 @@ It's **lightweight** and **easy to use**.
 
 ### Requirements
 
-- [`fzf`](https://github.com/junegunn/fzf) version `0.49.0` or higher
+- [`fzf`](https://github.com/junegunn/fzf) version `0.60.0` or higher
 
   If your OS package manager bundles an older version of `fzf`, you might install it using [`fzf`'s own install script](https://github.com/junegunn/fzf?tab=readme-ov-file#using-git).