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/wheels.yml

@@ -52,7 +52,7 @@ jobs:
           python -m twine check wheelhouse/*
 
       - name: Upload sdist
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: wheels
           path: wheelhouse/*.tar.gz
@@ -140,15 +140,15 @@ jobs:
 
       - name: Upload built wheels
         if: startsWith(github.ref_name, 'docs') != true
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: wheels
           path: wheelhouse/praat_parselmouth-*.whl
           if-no-files-found: error
 
       - name: Upload wheel for ReadTheDocs
         if: matrix.cibw-arch == 'manylinux_x86_64' && github.ref_type == 'branch' && !startsWith(github.ref_name, 'actions')
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: rtd-wheel
           path: wheelhouse/praat_parselmouth-*-cp311-cp311-*manylinux2014_x86_64*.whl