Update presentation slides and styles; modify author details and enhance theme colors

slides/themes/custom-default.css

@@ -28,4 +28,4 @@ svg[id^="mermaid-"] {
   max-height: 600px; 
 }
 
-@import 'https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.7.1/css/all.min.css';
+@import 'https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.7.2/css/all.min.css'