Merge changes I5961f953,I9ab3d94f

* changes:
  feat(realm_payload): use random start REC
  feat(realm_payload): increase maximum number of RECs
diff --git a/docs/getting_started/requirements.rst b/docs/getting_started/requirements.rst
index b69cced..553975f 100644
--- a/docs/getting_started/requirements.rst
+++ b/docs/getting_started/requirements.rst
@@ -28,7 +28,7 @@
 Note that at least Python 3.8 is required.
 
 Download and install the GNU cross-toolchain from Arm. The TF-A Tests have
-been tested with version 13.2.Rel1 (gcc 13.2):
+been tested with version 13.3.Rel1 (gcc 13.3):
 
 -  `GCC cross-toolchain`_