ci(deps): Update Github-actions to v7

Author: renovate[bot]

.github/workflows/cd.yaml

@@ -30,7 +30,7 @@ jobs:
           app_id: ${{ secrets.NOTIFYCAL_CICD_APP_ID }}
           private_key: ${{ secrets.NOTIFYCAL_CICD_APP_SECRET }}
 
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
         with:
           ref: ${{ github.head_ref || github.ref_name }}
           token: ${{ steps.gh-app-auth.outputs.token }}

.github/workflows/unit-test.yml

@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Set up Python 3.11
         uses: actions/setup-python@v6