gitlab-ci: lock upload job to curl 8.0.1
During the curl 8.1.x release cycle, the curlimages/curl:latest tag
published a broken version. Use a known-working version instead of
a moving target. We can update it later if needed.
During the curl 8.1.x release cycle, the curlimages/curl:latest tag
published a broken version. Use a known-working version instead of
a moving target. We can update it later if needed.