feat(ui): check pinned packages that can't be updated (#1139)

* style: fix filter types

* feat: check outdated pinned plugins

README.md

@@ -409,6 +409,7 @@ return {
     concurrency = nil, ---@type number? set to 1 to check for updates very slowly
     notify = true, -- get a notification when new updates are found
     frequency = 3600, -- check for updates every hour
+    check_pinned = false, -- check for pinned packages that can't be updated
   },
   change_detection = {
     -- automatically check for config file changes and reload the ui