docs(release): changelog for lts-v2.10.3 release

This is the first LTS release in TF-A-tests. But its numbering is
v2.10.3 to aligned with TF-A LTS it depends on.

Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>
Change-Id: I6b339924208e338595987e17980bfd593e4ad66f
diff --git a/docs/change-log.rst b/docs/change-log.rst
index aaa04bd..5b76067 100644
--- a/docs/change-log.rst
+++ b/docs/change-log.rst
@@ -7,6 +7,17 @@
 Tests are not guaranteed to be compatible. This also means that a version
 upgrade on the TF-A-Tests side might not necessarily introduce any new feature.
 
+Version 2.10.3
+--------------
+
+Code Refactoring
+^^^^^^^^^^^^^^^^
+
+- ERRATA ABI
+
+   - add the Cortex-X4 cpu struct
+   - update the cpu structs for errata ABI
+
 Version 2.10
 ------------
 
@@ -1693,7 +1704,7 @@
 
 --------------
 
-*Copyright (c) 2018-2022, Arm Limited. All rights reserved.*
+*Copyright (c) 2018-2024, Arm Limited. All rights reserved.*
 
 .. _Arm Neoverse Reference Design N1 Edge (RD-N1-Edge): https://developer.arm.com/products/system-design/reference-design/neoverse-reference-design
 .. _Arm SGI-575: https://developer.arm.com/products/system-design/fixed-virtual-platforms