Update actions/checkout action to v4

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

.github/workflows/build-test.yml

@@ -13,7 +13,7 @@ jobs:
       matrix:
         node-version: [16.x, 18.x]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Use Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v2
         with:

.github/workflows/check-package-version.yml

@@ -13,7 +13,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: 'create-main-branch'

.github/workflows/create-release-pr.yml

@@ -21,7 +21,7 @@ jobs:
       contents: write
       pull-requests: write
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           # This is to guarantee that the most recent tag is fetched.
           # This can be configured to a more reasonable value by consumers.