docs(changelog): changelog for lts-v2.8.27 release

Change-Id: Iaab552167165d1eeb2ed789a7fb1367b1aaa6226
Signed-off-by: Release CI <ci@trustedfirmware.org>
diff --git a/docs/conf.py b/docs/conf.py
index 676ffec..4eb7e4d 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -14,8 +14,8 @@
 
 project = "Trusted Firmware-A"
 author = "Trusted Firmware-A contributors"
-version = "2.8.26"
-release = "2.8.26"
+version = "2.8.27"
+release = "2.8.27"
 
 # -- General configuration ---------------------------------------------------