Bump actions/upload-artifact from 2.3.0 to 2.3.1 (#19)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 2.3.0 to 2.3.1.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v2.3.0...v2.3.1)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -49,7 +49,7 @@ jobs:
         run: ${{ matrix.job.build }} --verbosity=diagnostic --target=pack
       - name: Publish artifacts
         if: matrix.job.push && (github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/tags/'))
-        uses: actions/upload-artifact@v2.3.0
+        uses: actions/upload-artifact@v2.3.1
         with:
           if-no-files-found: warn
           name: package