Update CHANGELOG-EE.md for 13.2.8-ee

[ci skip]

CHANGELOG-EE.md

@@ -266,6 +266,10 @@ Please view this file on the master branch, on stable branches it's out of date.
 - Replace -800 hex value, replace usages with -700. !39734
+## 13.2.8 (2020-09-02)
+
+- No changes.
+
 ## 13.2.7 (2020-09-02)
 ### Security (2 changes)