chore(deps): update actions/checkout action to v7

Author: renovate[bot]

.github/workflows/continuous-integration.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Project
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
       - name: Add problem matcher
         run: echo "::add-matcher::.github/problemMatchers/eslint.json"
       - name: Use Node.js v24
@@ -35,7 +35,7 @@ jobs:
         node: [20, 22, 24]
     steps:
       - name: Checkout Project
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
       - name: Add problem matcher
         run: echo "::add-matcher::.github/problemMatchers/tsc.json"
       - name: Use Node.js ${{ matrix.node }}

.github/workflows/labelsync.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Project
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
         with:
           sparse-checkout: .github/labels.yml
           sparse-checkout-cone-mode: false