⬆️ Bump actions/upload-artifact from 6 to 7 (#818)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 6 to 7.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v6...v7)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/cache.yml

@@ -35,13 +35,13 @@ jobs:
         run: |
           jb build lectures --path-output ./ -W --keep-going
       - name: Upload Execution Reports
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         if: failure()
         with:
           name: execution-reports
           path: _build/html/reports
       - name: Upload "_build" folder (cache)
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: build-cache
           path: _build

.github/workflows/ci.yml

@@ -58,7 +58,7 @@ jobs:
           mkdir -p _build/html/_notebooks
           cp -u _build/jupyter/*.ipynb _build/html/_notebooks
       - name: Upload Execution Reports (Download Notebooks)
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         if: failure()
         with:
           name: execution-reports-notebooks
@@ -70,7 +70,7 @@ jobs:
           mkdir -p _build/html/_pdf
           cp -u _build/latex/*.pdf _build/html/_pdf
       - name: Upload Execution Reports (LaTeX)
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         if: failure()
         with:
           name: execution-reports-latex
@@ -81,7 +81,7 @@ jobs:
         run: |
           jb build lectures --path-output ./ -n -W --keep-going
       - name: Upload Execution Reports (HTML)
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         if: failure()
         with:
           name: execution-reports-html

.github/workflows/collab.yml

@@ -45,7 +45,7 @@ jobs:
         run: |
           jb build lectures --path-output ./ -n -W --keep-going
       - name: Upload Execution Reports
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         if: failure()
         with:
           name: execution-reports

.github/workflows/publish.yml

@@ -51,7 +51,7 @@ jobs:
         run: |
           jb build lectures --builder pdflatex --path-output ./ -n -W --keep-going
       - name: Upload Execution Reports (LaTeX)
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         if: failure()
         with:
           name: execution-reports-latex
@@ -67,12 +67,12 @@ jobs:
           jb build lectures --path-output ./ --builder=custom --custom-builder=jupyter -n -W --keep-going
           zip -r download-notebooks.zip _build/jupyter
       - name: Upload Execution Reports (Download Notebooks)
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         if: failure()
         with:
           name: execution-reports-notebooks
           path: _build/jupyter/reports
-      - uses: actions/upload-artifact@v6
+      - uses: actions/upload-artifact@v7
         with:
           name: download-notebooks
           path: download-notebooks.zip
@@ -87,7 +87,7 @@ jobs:
         run: |
           jb build lectures --path-output ./ -n -W --keep-going
       - name: Upload Execution Reports (HTML)
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         if: failure()
         with:
           name: execution-reports-html