Bump actions/upload-artifact from 3 to 4 (#2)

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

Author: dependabot[bot]

.github/workflows/ci_run.yml

@@ -29,7 +29,7 @@ jobs:
         run: pytest test/ --cov --cov-report=html --cov-fail-under=75
 
       - name: Upload Test Coverage Reports
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: treescriptify-cov
           path: htmlcov/