chore(deps) Update actions/checkout action to v4 (#229)

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

Author: renovate[bot]

.github/workflows/ci.yml

@@ -25,7 +25,7 @@ jobs:
           access_token: ${{ secrets.GITHUB_TOKEN }}
 
       - name: ⬇️ Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: ⎔ Setup node ${{ matrix.node }}
         uses: actions/setup-node@v2