Bump actions/upload-artifact from 3 to 4

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 3 to 4.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v3...v4)

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

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

.github/workflows/publish.yml

@@ -124,39 +124,39 @@ jobs:
 
       - name: Upload Debian Installer
         if: matrix.cfg.platform == 'linux'
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: debian-installer
           path: |
             dist/JupyterLab.deb
 
       - name: Upload Fedora Installer
         if: matrix.cfg.platform == 'linux'
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: fedora-installer
           path: |
             dist/JupyterLab.rpm
 
       - name: Upload macOS x64 Installer
         if: matrix.cfg.platform == 'osx-64'
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: mac-installer-x64
           path: |
             dist/JupyterLab-x64.dmg
 
       - name: Upload macOS arm64 Installer
         if: matrix.cfg.platform == 'osx-arm64'
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: mac-installer-arm64
           path: |
             dist/JupyterLab-arm64.dmg
 
       - name: Upload Windows Installer
         if: matrix.cfg.platform == 'win'
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: windows-installer
           path: |