docs(changelog): changelog for lts-v2.10.13 release

Change-Id: I00abacb9426e515cd7f1ded4ab483c5d39ce83d5
Signed-off-by: Release CI <ci@trustedfirmware.org>
diff --git a/docs/conf.py b/docs/conf.py
index 8317661..7a16211 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -14,8 +14,8 @@
 
 project = "Trusted Firmware-A"
 author = "Trusted Firmware-A contributors"
-version = "2.10.12"
-release = "2.10.12"
+version = "2.10.13"
+release = "2.10.13"
 
 # -- General configuration ---------------------------------------------------