Update cybersecurity.md

Author: Ashu104

content/cybersecurity/cybersecurity.md

@@ -26,3 +26,4 @@ Cybersecurity work involves the following programming languages:
 - [C](https://www.codecademy.com/resources/docs/c) and [C++] are low-level and can directly access RAM and system processes.
 - [SQL](https://www.codecademy.com/resources/docs/sql) and its features in database security.
 - [PHP](https://www.codecademy.com/resources/docs/php) protects against DDoS (distributed denial of service) attacks.
+- [Shell Scripting (Bash, PowerShell)](https://www.codecademy.com/catalog/language/bash) automating tasks, managing configurations, and analyzing system data in their respective operating systems