Merge pull request #15 from Project-Platypus/dependabot/github_actions/actions/checkout-6

Bump actions/checkout from 4 to 6

Author: dhadka

.github/workflows/test-and-publish.yml

@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Checkout source
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v6
@@ -46,7 +46,7 @@ jobs:
 
     steps:
       - name: Checkout source
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Get minimum Python version
         run: |