docs(security): security advisory for CVE-2023-49100

Reported-by: Christian Lindenmeier <christian.lindenmeier@fau.de>
Signed-off-by: Manish Pandey <manish.pandey2@arm.com>
Change-Id: I13fa93a65e5017dae6c837e88cd80bda72d4c2a3
diff --git a/docs/security_advisories/index.rst b/docs/security_advisories/index.rst
index c9b0f78..ad55546 100644
--- a/docs/security_advisories/index.rst
+++ b/docs/security_advisories/index.rst
@@ -15,3 +15,4 @@
    security-advisory-tfv-8.rst
    security-advisory-tfv-9.rst
    security-advisory-tfv-10.rst
+   security-advisory-tfv-11.rst