build: add libeccodes-dev system dependency to CI workflow

Author: philipredstone

.github/workflows/ci.yml

@@ -24,6 +24,11 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: Install system dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libeccodes-dev
+
       - name: Setup Go
         uses: actions/setup-go@v5
         with: