chore(deps): update actions/checkout action to v5 (#82)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/test-docker-build-complex.yml

@@ -27,7 +27,7 @@ jobs:
     needs: [setup]
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - uses: ./
         id: current

.github/workflows/test-docker-build-multi-platform.yml

@@ -27,7 +27,7 @@ jobs:
     needs: [setup]
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - uses: ./
         id: current

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

@@ -27,7 +27,7 @@ jobs:
     needs: [setup]
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - uses: ./
         id: current