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

Conflicts:
- `.github/ISSUE_TEMPLATE/bug_report.md`:
  Upstream added the `bug` label to bug reports.
  Did the same.
- `app/services/fan_out_on_write_service.rb`:
  Upstream put DMs back into timelines, glitch-soc was already doing it.
  Ignored upstream changes.

app/controllers/settings/exports/bookmarks_controller.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+module Settings
+  module Exports
+    class BookmarksController < BaseController
+      include ExportControllerConcern
+
+      def index
+        send_export_file
+      end
+
+      private
+
+      def export_data
+        @export.to_bookmarks_csv
+      end
+    end
+  end
+end