Bump @11ty/eleventy-plugin-rss from 1.2.0 to 3.0.0

Bumps [@11ty/eleventy-plugin-rss](https://github.com/11ty/eleventy-plugin-rss) from 1.2.0 to 3.0.0.
- [Release notes](https://github.com/11ty/eleventy-plugin-rss/releases)
- [Commits](11ty/eleventy-plugin-rss@v1.2.0...v3.0.0)

---
updated-dependencies:
- dependency-name: "@11ty/eleventy-plugin-rss"
  dependency-version: 3.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Author: dependabot[bot]

package-lock.json

@@ -21,7 +21,7 @@
   "dependencies": {
     "@11ty/eleventy": "^3.1.2",
     "@11ty/eleventy-navigation": "^1.0.5",
-    "@11ty/eleventy-plugin-rss": "^1.1.2",
+    "@11ty/eleventy-plugin-rss": "^3.0.0",
     "@11ty/eleventy-plugin-syntaxhighlight": "^5.0.2",
     "elasticlunr": "^0.9.5",
     "eleventy-plugin-toc": "^1.1.5",