[Docs Site] Bump @astrojs/rss from 4.0.11 to 4.0.12 (#23341)

Bumps [@astrojs/rss](https://github.com/withastro/astro/tree/HEAD/packages/astro-rss) from 4.0.11 to 4.0.12.
- [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-version: 4.0.12
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package-lock.json

@@ -30,7 +30,7 @@
 		"@apidevtools/swagger-parser": "12.0.0",
 		"@astrojs/check": "0.9.4",
 		"@astrojs/react": "4.2.5",
-		"@astrojs/rss": "4.0.11",
+		"@astrojs/rss": "4.0.12",
 		"@astrojs/sitemap": "3.4.1",
 		"@astrojs/starlight": "0.34.3",
 		"@astrojs/starlight-docsearch": "0.6.0",