Bump actions/upload-artifact from 4 to 5

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4 to 5.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4...v5)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/CI.yml

@@ -77,7 +77,7 @@ jobs:
           DOCUMENTER_KEY: ${{ secrets.DOCUMENTER_KEY }}
       - name: Zip the HTML documentation
         run: zip-folder --debug --auto-root --outfile "docs.zip" docs/build
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v5
         name: Upload documentation artifacts
         with:
           name: GRAPE

.github/workflows/JOSS.yml

@@ -20,7 +20,7 @@ jobs:
             openjournals/inara:latest \
             -o pdf -p paper.md
       - name: Upload
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: paper
           path: paper/paper.pdf