Update actions/checkout action to v4 (#16)

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

.github/workflows/autotag.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: ⤵️ Check out code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
           token: ${{ secrets.GH_PAT }}

.github/workflows/build.yml

@@ -14,7 +14,7 @@ jobs:
     name: Build image
     steps:
       - name: 📥 Checkout the repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: 🏗 Set up QEMU
         uses: docker/setup-qemu-action@v2

.github/workflows/lint.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: ⤵️ Check out code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: 🚀 Run yamllint
         uses: reviewdog/action-yamllint@v1
@@ -24,7 +24,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: ⤵️ Check out code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: 🚀 Run hadolint
         uses: reviewdog/action-hadolint@v1
@@ -36,7 +36,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: ⤵️ Check out code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: 🚀 Run shellcheck
         uses: reviewdog/action-shellcheck@v1