meta: bump feed from 4.2.2 to 5.1.0 (#7821)

Bumps [feed](https://github.com/jpmonette/feed) from 4.2.2 to 5.1.0.
- [Release notes](https://github.com/jpmonette/feed/releases)
- [Commits](jpmonette/feed@4.2.2...5.1.0)

---
updated-dependencies:
- dependency-name: feed
  dependency-version: 5.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

apps/site/package.json

@@ -52,7 +52,7 @@
     "@vercel/speed-insights": "~1.2.0",
     "classnames": "~2.5.1",
     "cross-env": "7.0.3",
-    "feed": "~4.2.2",
+    "feed": "~5.1.0",
     "github-slugger": "~2.0.0",
     "glob": "~11.0.1",
     "gray-matter": "~4.0.3",