chore(deps): bump actions/checkout from 3 to 4 (#19)

Author: thekaveman

.github/workflows/mkdocs.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Deploy docs
         uses: mhausenblas/mkdocs-deploy-gh-pages@master

.github/workflows/publish-devcontainer.yml

@@ -16,7 +16,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Docker Login to GitHub Container Registry
         uses: docker/login-action@v2