Merge pull request #356 from uPortal-Project/renovate/actions-checkout-7.x

Update actions/checkout action to v7

Author: Naenyn

.github/workflows/CI.yml

@@ -50,7 +50,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
       - name: Set up JDK
         uses: actions/setup-java@v5
         with: