Update actions/checkout action to v4

Author: renovate[bot]

.github/workflows/build.yml

@@ -17,7 +17,7 @@ jobs:
     steps:
       - name: Install build essentials
         run: microdnf install git tar findutils -y
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
         with:
           fetch-depth: 1
       - uses: gradle/wrapper-validation-action@v1