Upgrade plugins to use v3.8.0 of @gerritcodereview/typescript-api

Release-Notes: skip
Change-Id: Icd5666718887031e24de144e435a03b68c7be0b4
diff --git a/plugins/package.json b/plugins/package.json
index 331a417..b7e373a 100644
--- a/plugins/package.json
+++ b/plugins/package.json
@@ -3,7 +3,7 @@
   "description": "Gerrit Code Review - frontend plugin dependencies, each plugin may depend on a subset of these",
   "browser": true,
   "dependencies": {
-    "@gerritcodereview/typescript-api": "3.7.0",
+    "@gerritcodereview/typescript-api": "3.8.0",
     "@polymer/decorators": "^3.0.0",
     "@polymer/polymer": "^3.4.1",
     "@open-wc/testing": "^3.1.6",