Bump actions/upload-artifact in /.github/actions/docker-build (#6464)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4.6.2 to 6.0.0.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](https://github.com/actions/upload-artifact/compare/ea165f8d65b6e75b540449e92b4886f43607fa02...b7c566a772e6b6bfb58ed0dc250532a479d7789f)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/actions/docker-build/action.yml

@@ -50,7 +50,7 @@ runs:
         digest="${{ steps.build.outputs.digest }}"
         touch "/tmp/digests/${digest#sha256:}"
     - name: Upload digest
-      uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
+      uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
       with:
         name: digests-${{ inputs.platform }}
         path: /tmp/digests/*