Update actions/checkout action to v5

Author: renovate[bot]

.github/workflows/build-pkg.yml

@@ -13,7 +13,7 @@ jobs:
       targets: ${{ steps.update-targets.outputs.targets }}
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           ref: "${{ github.base_ref }}"
       - name: Setup Prebuilt-MPR APT repository
@@ -48,7 +48,7 @@ jobs:
           remove-codeql: 'true'
           remove-docker-images: 'true'
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           path: pkg
       - name: Set up QEMU

.github/workflows/check-pkg.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Setup Prebuilt-MPR APT repository
         uses: makedeb/setup-makedeb@main
         with:

.github/workflows/trigger-checks.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Setup Prebuilt-MPR APT repository
         uses: makedeb/setup-makedeb@main
         with: