build(deps): update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: "Checkout the repository"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: "Check format"
         uses: psf/black@stable

.github/workflows/docs.yaml

@@ -17,7 +17,7 @@ jobs:
     concurrency: deploy-docs-${{ github.ref }}
     steps:
       - name: "Checkout the repository"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: "Install uv"
         uses: astral-sh/setup-uv@v5

.github/workflows/release.yaml

@@ -39,7 +39,7 @@ jobs:
       pull-requests: write
     steps:
       - name: "Checkout the repository"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: "Setup pnpm"
         uses: pnpm/action-setup@v4

.github/workflows/validate.yaml

@@ -17,7 +17,7 @@ jobs:
     name: "Hassfest"
     steps:
       - name: "Checkout the repository"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: "Validate Hassfest"
         uses: home-assistant/actions/hassfest@master
@@ -27,7 +27,7 @@ jobs:
     name: "HACS"
     steps:
       - name: "Checkout the repository"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: "Validate HACS"
         uses: hacs/action@main