Update dependency @11ty/eleventy-plugin-rss to v2.0.4

Author: renovate[bot]

tools/vf-extensions/package.json

@@ -25,7 +25,7 @@
   },
   "homepage": "https://github.com/visual-framework/vf-core#readme",
   "dependencies": {
-    "@11ty/eleventy-plugin-rss": "2.0.3",
+    "@11ty/eleventy-plugin-rss": "2.0.4",
     "luxon": "^3.0.0",
     "touch": "^3.1.0"
   },