Update libraries.json from CI (#91)

Co-authored-by: libhal-bot <libhal-bot@users.noreply.github.com>

Author: github-actions[bot]

libraries.json

@@ -98,6 +98,10 @@
         "version": "5.4.3",
         "url": "https://libhal.github.io/api/libhal-util/5.4.3"
       },
+      {
+        "version": "5.9.1",
+        "url": "https://libhal.github.io/api/libhal-util/5.9.1"
+      },
       {
         "version": "main",
         "url": "https://libhal.github.io/api/libhal-util/main"