build.yml: Fix No files were found with the provided path

[simbit18]

Summary

Fix

Warning: No files were found with the provided path: buildartifacts/.

Run actions/upload-artifact@v7.0.0
  with:
    name: linux-other-builds
    path: buildartifacts/
    if-no-files-found: warn
    compression-level: 6
    overwrite: false
    include-hidden-files: false
    archive: true
  env:
    DOCKER_BUILDKIT: 1
    nuttx_sha: a3b5fe0eda44cb00e4ed096cdc2e03bfd5c3cc00
Warning: No files were found with the provided path: buildartifacts/. No artifacts will be uploaded.

https://github.com/apache/nuttx/actions/runs/23833337478

Impact

• Impact on user: NO
• Impact on build: NO
• Impact on hardware: NO
• Impact on documentation: NO
• Impact on security: NO
• Impact on compatibility: NO

Testing

GitHub

https://github.com/simbit18/nuttx_test_pr/actions/runs/23850147075

[simbit18]

Hi @lupyuen,
https://www.githubstatus.com/incidents/tstkmx7pcs5d

I think it’s precisely this issue (now resolved) that’s slowing everything down; it’ll take a while

[lupyuen]

@simbit18 NuttX Mirror Repo is building OK though. Maybe some other Apache Project is taking up all the GitHub Runners? ;-)

https://github.com/NuttX/nuttx/actions/runs/23834592011