ci: upgrade checkout action

Author: dangreen

.github/workflows/checks.yml

@@ -9,15 +9,15 @@ jobs:
     name: editorconfig
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
+        uses: actions/checkout@v4
       - name: Check editorconfig
         uses: editorconfig-checker/action-editorconfig-checker@main
   package-json:
     runs-on: ubuntu-latest
     name: package.json
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
+        uses: actions/checkout@v4
       - name: Install pnpm
         uses: pnpm/action-setup@v2
         with:

.github/workflows/tests.yml

@@ -15,7 +15,7 @@ jobs:
     name: Node.js ${{ matrix.node-version }} / unit
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
+        uses: actions/checkout@v4
       - name: Install pnpm
         uses: pnpm/action-setup@v2
         with: