Update official plugin list

* Remove duplicate entry
* Add missing plugins
* Update list for new names

lib/plugin/metadata.rb

@@ -15,6 +15,7 @@ class Plugin::Metadata
     "discourse-bbcode",
     "discourse-bbcode-color",
     "discourse-cakeday",
+    "discourse-calendar",
     "discourse-characters-required",
     "discourse-chat-integration",
     "discourse-checklist",
@@ -22,10 +23,13 @@ class Plugin::Metadata
     "discourse-data-explorer",
     "discourse-details",
     "discourse-footnote",
-    "discourse-github-linkback",
+    "discourse-github",
     "discourse-gradle-issue",
+    "discourse-graphviz",
     "discourse-invite-tokens",
     "discourse-local-dates",
+    "discourse-logster-rate-limit-checker",
+    "discourse-logster-transporter",
     "discourse-math",
     "discourse-moderator-attention",
     "discourse-narrative-bot",
@@ -33,18 +37,20 @@ class Plugin::Metadata
     "discourse-no-bump",
     "discourse-oauth2-basic",
     "discourse-patreon",
-    "discourse-perspective-api",
+    "discourse-perspective",
     "discourse-plugin-discord-auth",
     "discourse-plugin-linkedin-auth",
     "discourse-plugin-office365-auth",
     "discourse-policy",
     "discourse-presence",
     "discourse-prometheus",
+    "discourse-prometheus-alert-receiver",
     "discourse-push-notifications",
     "discourse-saved-searches",
     "discourse-signatures",
     "discourse-sitemap",
     "discourse-solved",
+    "discourse-spoiler-alert",
     "discourse-staff-notes",
     "discourse-styleguide",
     "discourse-tooltips",
@@ -52,12 +58,8 @@ class Plugin::Metadata
     "discourse-user-card-badges",
     "discourse-voting",
     "docker_manager",
-    "GitHub badges",
     "lazyYT",
-    "logster-rate-limit-checker",
-    "poll",
-    "Spoiler Alert!",
-    "staff-notes"
+    "poll"
   ])
 
   FIELDS ||= [:name, :about, :version, :authors, :url, :required_version]