Merge pull request #31 from Simula-SSCP/dependabot/github_actions/actions/upload-artifact-6

Bump actions/upload-artifact from 5 to 6

Author: jorgensd

.github/workflows/build_docs.yml

@@ -36,7 +36,7 @@ jobs:
         run:
           pixi run jupyter-book build .
 
-      - uses: actions/upload-artifact@v5
+      - uses: actions/upload-artifact@v6
         # always upload artifact, which can include error messages
         if: always()
         with: