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/asciidoc.yml

@@ -34,7 +34,7 @@ jobs:
         with:
           program: asciidoctor -D public -b html5 -o index.html -a toc=left -a revdate="${{ steps.rev_info.outputs.date }}" -a revnumber="${{ steps.rev_info.outputs.version }}" -a source-highlighter=rouge repo/README.adoc
       - name: Upload AsciiDoc documentation
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: docs-${{ github.sha }}
           path: public