Merge pull request #369 from mollie/fix-package-artifacts

Use upload-artifact v4 since v3 is not compatible with download-artifact v4

Author: Thomasvdh92

.github/workflows/release.yaml

@@ -16,7 +16,7 @@ jobs:
     needs: pre-build-checks
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Setup Python
         uses: actions/setup-python@v4
@@ -32,7 +32,7 @@ jobs:
         run: python -m build
 
       - name: Save artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with: 
           name: packages-${{ github.ref_name }}
           path: dist/*