fix: improve uv run completions - #514

Failed to save: Unable to reserve cache with key setup-uv-2-x86_64-unknown-linux-gnu-ubuntu-24.04-3.12.3-pruned-96516046578947983c3166476ddead6fa5fb0135bc6efb8d5b8fe8ae0b9a16da, another job may be creating this cache.