chore(deps): bump @astrojs/rss from 4.0.17 to 4.0.18

Bumps [@astrojs/rss](https://github.com/withastro/astro/tree/HEAD/packages/astro-rss) from 4.0.17 to 4.0.18.
- [Release notes](https://github.com/withastro/astro/releases)
- [Changelog](https://github.com/withastro/astro/blob/main/packages/astro-rss/CHANGELOG.md)
- [Commits](https://github.com/withastro/astro/commits/@astrojs/rss@4.0.18/packages/astro-rss)

---
updated-dependencies:
- dependency-name: "@astrojs/rss"
  dependency-version: 4.0.18
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -10,7 +10,7 @@
     "astro": "astro"
   },
   "dependencies": {
-    "@astrojs/rss": "4.0.17",
+    "@astrojs/rss": "4.0.18",
     "@microsoft/clarity": "^1.0.2",
     "@tailwindcss/vite": "4.2.1",
     "astro": "5.18.0",