ORC-2118: Use ubuntu-slim for GitHub Actions license-check job

Author: dongjoon-hyun

.github/workflows/build_and_test.yml

@@ -246,7 +246,7 @@ jobs:
 
   license-check:
     name: "License Check"
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-slim
     steps:
       - name: Checkout repository
         uses: actions/checkout@v6