feat: update MbedTLS URL to v3.6.1

Signed-off-by: Ryan Everett <ryan.everett@arm.com>
Change-Id: I2fbd280c2ee0b9f7ffd57b8cb53437a6c35ea0a0
diff --git a/tf-a-gerrit-tforg-l1.yaml b/tf-a-gerrit-tforg-l1.yaml
index 0dcc89f..7742b27 100644
--- a/tf-a-gerrit-tforg-l1.yaml
+++ b/tf-a-gerrit-tforg-l1.yaml
@@ -55,7 +55,7 @@
             default: '+refs/heads/master:refs/remotes/origin/master'
         - string:
             name: MBEDTLS_URL
-            default: 'https://github.com/Mbed-TLS/mbedtls/archive/mbedtls-3.6.0.tar.gz'
+            default: 'https://github.com/Mbed-TLS/mbedtls/archive/mbedtls-3.6.1.tar.gz'
         - string:
             name: SHARE_FOLDER
             default: '/srv/shared/${JOB_NAME}/${BUILD_NUMBER}'