Update libraries.json from CI (#51)

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

Author: github-actions[bot]

libraries.json

@@ -42,6 +42,10 @@
         "version": "1.12.0",
         "url": "https://libhal.github.io/api/libhal-arm-mcu/1.12.0"
       },
+      {
+        "version": "1.20.0",
+        "url": "https://libhal.github.io/api/libhal-arm-mcu/1.20.0"
+      },
       {
         "version": "1.9.0",
         "url": "https://libhal.github.io/api/libhal-arm-mcu/1.9.0"