⬆️ Update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/labels.yaml

@@ -18,7 +18,7 @@ jobs:
       pull-requests: write
     steps:
       - name: ⤵️ Check out code from GitHub
-        uses: actions/checkout@v4.3.1
+        uses: actions/checkout@v6.0.2
       - name: 🚀 Run Label Syncer
         uses: micnncim/action-label-syncer@v1.3.0
         env:

.github/workflows/linting.yaml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: ⤵️ Check out code from GitHub
-        uses: actions/checkout@v4.3.1
+        uses: actions/checkout@v6.0.2
       - name: 🏗 Set up Poetry
         run: pipx install poetry
       - name: 🏗 Set up Python ${{ env.DEFAULT_PYTHON }}

.github/workflows/publish.yaml

@@ -19,7 +19,7 @@ jobs:
       packages: write
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4.3.1
+        uses: actions/checkout@v6.0.2
 
       - name: Log in to the Container registry
         uses: docker/login-action@v3.6.0