Bump n-health from 13.0.0 to 13.1.0

Bumps [n-health](https://github.com/Financial-Times/n-health) from 13.0.0 to 13.1.0.
- [Release notes](https://github.com/Financial-Times/n-health/releases)
- [Commits](Financial-Times/n-health@v13.0.0...v13.1.0)

---
updated-dependencies:
- dependency-name: n-health
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

package.json

@@ -16,7 +16,7 @@
     "@financial-times/n-flags-client": "^15.0.0",
     "express": "^4.17.3",
     "isomorphic-fetch": "^3.0.0",
-    "n-health": "^13.0.0",
+    "n-health": "^13.1.0",
     "next-metrics": "^12.15.0"
   },
   "devDependencies": {