chore: update actions/checkout action to v5

Author: renovate[bot]

.github/workflows/CI.yml

@@ -15,7 +15,7 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
     - name: Checkout MIWG Test Suite
       run: |
         mkdir -p ${{ env.MIWG_PATH }}

.github/workflows/MIWG.yml

@@ -21,7 +21,7 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
     - name: Checkout MIWG Test Suite
       run: |
         mkdir -p ${{ env.MIWG_PATH }}