Merge pull request #123 from hmcts/renovate/actions-checkout-6.x

Update actions/checkout action to v6

Author: linusnorton

.github/workflows/ado_artifacts_build.yml

@@ -12,7 +12,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           submodules: recursive
 

.github/workflows/gradle.yml

@@ -15,7 +15,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - name: Set up JDK 21