Update the site for minor releases 2.8.2 (#13616)

diff --git a/site2/website/releases.json b/site2/website/releases.json
index 952c91f..ffd29d8 100644
--- a/site2/website/releases.json
+++ b/site2/website/releases.json
@@ -1,6 +1,7 @@
 [
   "2.9.1",
   "2.9.0",
+  "2.8.2",
   "2.8.1",
   "2.8.0",
   "2.7.4",