build(deps): bump actions/upload-artifact from 4 to 7 (#6)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4 to 7.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4...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/ci.yml

@@ -54,7 +54,7 @@ jobs:
           python -m pip install --upgrade pip build twine
           python -m build
           python -m twine check dist/*
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v7
         with:
           name: dist
           path: dist/

.github/workflows/publish-pypi.yml

@@ -85,7 +85,7 @@ jobs:
       - name: Upload wheel as workflow artifact
         # Useful for downloading the exact wheel that was published from
         # the Actions UI, in case PyPI search is slow.
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: ghostloop-${{ github.ref_name }}
           path: dist/