Merge branch 'master' into glitch-soc/merge-upstream

Conflicts:
- Gemfile
- Gemfile.lock
- app/controllers/about_controller.rb
- app/controllers/auth/sessions_controller.rb

app/controllers/well_known/nodeinfo_controller.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+module WellKnown
+  class NodeInfoController < ActionController::Base
+    include CacheConcern
+
+    before_action { response.headers['Vary'] = 'Accept' }
+
+    def index
+      expires_in 3.days, public: true
+      render_with_cache json: {}, serializer: NodeInfo::DiscoverySerializer, adapter: NodeInfo::Adapter, expires_in: 3.days, root: 'nodeinfo'
+    end
+
+    def show
+      expires_in 30.minutes, public: true
+      render_with_cache json: {}, serializer: NodeInfo::Serializer, adapter: NodeInfo::Adapter, expires_in: 30.minutes, root: 'nodeinfo'
+    end
+  end
+end