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

Author: renovate[bot]

package-lock.json

@@ -25,7 +25,7 @@
   "devDependencies": {
     "@11ty/eleventy": "3.0.0-alpha.5",
     "@11ty/eleventy-img": "^4.0.2",
-    "@11ty/eleventy-plugin-rss": "1.2.0",
+    "@11ty/eleventy-plugin-rss": "2.0.1",
     "@11ty/eleventy-plugin-syntaxhighlight": "5.0.0",
     "@shopify/prettier-plugin-liquid": "^1.4.4",
     "html-minifier": "4.0.0",