docs(changelog): changelog for lts-v2.8.23 release

Change-Id: Id8d27316bcadc6f6d0359f26b1f406cd41e0764f
Signed-off-by: Release CI <ci@trustedfirmware.org>
diff --git a/readme.rst b/readme.rst
index 5de57e6..2915980 100644
--- a/readme.rst
+++ b/readme.rst
@@ -55,3 +55,4 @@
 
 
 
+