build: updated @11ty/eleventy-plugin-rss dependency

Author: mfranzke

packages/docs/package.json

@@ -5,7 +5,7 @@
   "main": "index.js",
   "dependencies": {
     "@11ty/eleventy": "^0.8.3",
-    "@11ty/eleventy-plugin-rss": "^1.0.6",
+    "@11ty/eleventy-plugin-rss": "^1.1.2",
     "@11ty/eleventy-plugin-syntaxhighlight": "^2.0.3",
     "@tbranyen/jsdom": "^13.0.0",
     "concurrently": "^4.1.0",