update SECURITY.md after 2.8.0 release

diff --git a/SECURITY.md b/SECURITY.md
index 77d9d0f70deff4e7459cf336c3c8096ea2a6ad8c..31a13d168e33c4b8c22fdac2274912d3029a5bc8 100644 (file)
--- a/SECURITY.md
+++ b/SECURITY.md
@@ -7,7 +7,6 @@ The following versions would get a security update release if necessary.
 | Version  | Supported          |
 | -------- | ------------------ |
 | 2.8.x    | :white_check_mark: |
-| 2.7.x    | :white_check_mark: |
 | < 1.16.0 | :x:                |
 
 For older version 2 releases, the normal security upgrade path is