Update checkout action to version 4

Author: Antynea

.github/workflows/codespell.yml

@@ -14,9 +14,8 @@ jobs:
   codespell:
     name: Check for spelling errors
     runs-on: ubuntu-latest
-
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Codespell
         uses: codespell-project/actions-codespell@v2