Bump @astrojs/rss from 2.4.3 to 3.0.0

Bumps [@astrojs/rss](https://github.com/withastro/astro/tree/HEAD/packages/astro-rss) from 2.4.3 to 3.0.0.
- [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/[email protected]/packages/astro-rss)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -48,7 +48,7 @@
 	},
 	"dependencies": {
 		"@astrojs/prefetch": "^0.2.3",
-		"@astrojs/rss": "^2.4.3",
+		"@astrojs/rss": "^3.0.0",
 		"astro": "2.7.1",
 		"astro-icon": "^0.8.1",
 		"katex": "^0.16.8",