Bump scientific-python/upload-nightly-action in the actions group

Bumps the actions group with 1 update: [scientific-python/upload-nightly-action](https://github.com/scientific-python/upload-nightly-action).


Updates `scientific-python/upload-nightly-action` from 0.6.3 to 0.6.4
- [Release notes](https://github.com/scientific-python/upload-nightly-action/releases)
- [Commits](scientific-python/upload-nightly-action@5748273...e76cfec)

---
updated-dependencies:
- dependency-name: scientific-python/upload-nightly-action
  dependency-version: 0.6.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: actions
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/nightly-wheels.yml

@@ -69,7 +69,7 @@ jobs:
 
       - name: Upload wheel
         id: upload
-        uses: scientific-python/upload-nightly-action@5748273c71e2d8d3a61f3a11a16421c8954f9ecf # 0.6.3
+        uses: scientific-python/upload-nightly-action@e76cfec8a4611fd02808a801b0ff5a7d7c1b2d99 # 0.6.4
         with:
           anaconda_nightly_upload_token: ${{ secrets.ANACONDA_NIGHTLY }}
           artifacts_path: dist