chore(deps): bump actions/upload-artifact from 6 to 7 (#4620)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 6 to 7.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](https://github.com/actions/upload-artifact/compare/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>
Co-authored-by: Francisco Manríquez Novoa <49853152+chopan050@users.noreply.github.com>

.github/workflows/python-publish.yml

@@ -33,7 +33,7 @@ jobs:
         uv publish
 
     - name: Store artifacts
-      uses: actions/upload-artifact@v6
+      uses: actions/upload-artifact@v7
       with:
           path: dist/*.tar.gz
           name: manim.tar.gz

.github/workflows/release-publish-documentation.yml

@@ -43,7 +43,7 @@ jobs:
         tar -czvf ../html-docs.tar.gz *
 
     - name: Store artifacts
-      uses: actions/upload-artifact@v6
+      uses: actions/upload-artifact@v7
       with:
           path: ${{ github.workspace }}/docs/build/html-docs.tar.gz
           name: html-docs.tar.gz