Merge pull request #1200 from Financial-Times/BOLT-234-update-ui-header-to-use-latest-o-header

chore: bump o-header to 15.3.1

Author: markdoran-ft

package-lock.json

@@ -30,7 +30,7 @@
   },
   "peerDependencies": {
     "@financial-times/logo-images": "^1.10.1",
-    "@financial-times/o-header": "^15.3.0",
+    "@financial-times/o-header": "^15.3.1",
     "@financial-times/o3-button": "^3.15.0",
     "n-topic-search": "^10.1.1",
     "preact": "^10.23.2",