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

Change-Id: Ifc50a5a8fa00fbd797aaa2bb3116a0cd4e937805
Signed-off-by: Release CI <ci@trustedfirmware.org>
diff --git a/docs/conf.py b/docs/conf.py
index 9b75fe6..59bd28f 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -14,8 +14,8 @@
 
 project = "Trusted Firmware-A"
 author = "Trusted Firmware-A contributors"
-version = "2.10.2"
-release = "2.10.2"
+version = "2.10.3"
+release = "2.10.3"
 
 # -- General configuration ---------------------------------------------------