feat: Bump renderer extension with fixes for highlighting

Author: Mauve Signweaver

app/extensions/builtins.json

@@ -4,7 +4,7 @@
     "url": "https://github.com/AgregoreWeb/extension-agregore-history/releases/download/v{version}/agregore-history-v{version}.zip"
   },
   "agregore-renderer": {
-    "version": "2.1.5",
+    "version": "2.1.6",
     "url": "https://github.com/AgregoreWeb/extension-agregore-renderer/releases/download/v{version}/agregore-renderer-v{version}.zip"
   },
   "agregore-qr-share": {
@@ -20,4 +20,4 @@
     "url": "https://github.com/gorhill/uBlock/releases/download/{version}/uBlock0_{version}.chromium.zip",
     "stripPrefix": "uBlock0.chromium/"
   }
-}
+}