ci: add MsgPack library for UNO Q build

Author: pennam

.github/workflows/compile-examples.yml

@@ -108,6 +108,11 @@ jobs:
               - name: arduino:zephyr
             artifact-name-suffix: arduino-zephyr-unoq
 
+      include:
+        fqbn: arduino:zephyr:unoq
+        libraries: |
+          - name: MsgPack
+
     steps:
       - name: Checkout repository
         uses: actions/checkout@v6