chore(deps): update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/build-and-test.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v5
         with:

.github/workflows/publish.yml

@@ -16,7 +16,7 @@ jobs:
       version: ${{ steps.get-version.outputs.version }}
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v5