chore(deps): update actions/checkout action to v4 (#34)

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

Author: plural-renovate[bot]

.github/workflows/ci.yaml

@@ -62,7 +62,7 @@ jobs:
       packages: 'write'
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         fetch-depth: 0
     - name: Docker meta

.github/workflows/publish.yaml

@@ -28,7 +28,7 @@ jobs:
       packages: 'write'
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         fetch-depth: 0
     - name: Docker meta
@@ -101,7 +101,7 @@ jobs:
       discussions: write
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Release
       uses: softprops/action-gh-release@v1
       with: