Merge branch 'main' into dependabot/github_actions/actions/checkout-6

Author: HeinrichAD

.github/workflows/main.yml

@@ -85,7 +85,7 @@ jobs:
     needs: [build]
     steps:
       - uses: actions/checkout@v6
-      - uses: DavidAnson/markdownlint-cli2-action@v20
+      - uses: DavidAnson/markdownlint-cli2-action@v21
         with:
           globs: |
             README.md
@@ -139,7 +139,7 @@ jobs:
       - name: Create coverage HTML report
         run: python -m coverage html --directory "./build/htmlcov"
       - name: Upload coverage report artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: HTML coverage report
           path: build/htmlcov
@@ -158,7 +158,7 @@ jobs:
       - name: Install dependencies
         run: pip install -U -e ".[all]"
       - name: Download coverage report artifact
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: HTML coverage report
           path: build/htmlcov