Bump actions/checkout from 3 to 4

.github/workflows/build-checks.yml

@@ -25,7 +25,7 @@ jobs:
     name: ${{ matrix.name }}
     steps:
       - name: Check out repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Install build dependencies
         run: tools/debian_buildenv.sh setup
       - name: Create build directory

.github/workflows/build.yml

@@ -165,7 +165,7 @@ jobs:
         run: cargo install --version "${{ env.SCCACHE_VERSION }}" sccache
 
       - name: "Check out repository"
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           # This is necessary for making `git describe` work.
           fetch-depth: 0
@@ -482,7 +482,7 @@ jobs:
     needs: build
     steps:
       - name: "Check out repository"
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 

.github/workflows/pre-commit.yml

@@ -18,7 +18,7 @@ jobs:
     container: holzhaus/mixxx-ci:20220930
     steps:
       - name: "Check out repository"
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           # Unfortunately we need the whole history and can't use a shallow clone
           # because the Appstream Metadata hook parses the history to find the