Update actions/checkout action to v7

Author: renovate[bot]

.github/workflows/merge-jobs.yml

@@ -18,7 +18,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Read .nvmrc
         run: echo "NVMRC=$(cat .nvmrc)" >> $GITHUB_ENV

.github/workflows/pages.yml

@@ -34,7 +34,7 @@ jobs:
           access_token: ${{ github.token }}
 
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Read .nvmrc
         run: echo "NVMRC=$(cat .nvmrc)" >> $GITHUB_ENV

.github/workflows/pull-request-jobs.yml

@@ -20,7 +20,7 @@ jobs:
       options: --user 1001
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Read .nvmrc
         run: echo "NVMRC=$(cat .nvmrc)" >> $GITHUB_ENV
@@ -65,7 +65,7 @@ jobs:
           access_token: ${{ github.token }}
 
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Read .nvmrc
         run: echo "NVMRC=$(cat .nvmrc)" >> $GITHUB_ENV