Upgrade actions/checkout v3.1.0 -> v4.0.0

See:
- https://github.com/actions/checkout/blob/HEAD/CHANGELOG.md#v400
- https://github.com/actions/checkout/blob/HEAD/CHANGELOG.md#v360
- https://github.com/actions/checkout/blob/HEAD/CHANGELOG.md#v353
- https://github.com/actions/checkout/blob/HEAD/CHANGELOG.md#v352
- https://github.com/actions/checkout/blob/HEAD/CHANGELOG.md#v351
- https://github.com/actions/checkout/blob/HEAD/CHANGELOG.md#v350
- https://github.com/actions/checkout/blob/HEAD/CHANGELOG.md#v340
- https://github.com/actions/checkout/blob/HEAD/CHANGELOG.md#v330
- https://github.com/actions/checkout/blob/HEAD/CHANGELOG.md#v320

.github/workflows/build.yaml

@@ -17,7 +17,7 @@ jobs:
             sonarEnabled: false
     steps:
       - name: Check out code
-        uses: actions/checkout@v3.1.0
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
         with:
           # Fetch entire history for SonarCloud analysis.
           fetch-depth: 0