ci(workflow): add BBG support to prevent unauthorized writes

Added Baseband-guard (BBG) support to the workflow documentation to enhance security by preventing unauthorized writes to certain partitions. The change references the implementation details at the provided GitHub URL.

.github/workflows/main.yml

@@ -143,6 +143,7 @@ jobs:
           -> IPSet Support for Advanced Network Filtering
           -> Wireguard Support
           -> BBR v1 Support
+          -> Added BBG support to prevent unauthorised writes to certain partitions: https://github.com/vc-teahouse/Baseband-guard
 
           Notes:
           -> SUS SU Mode 2 will show as disabled or not compatble due to non-kprobe hooks and is not needed anymore!