Cache failures

[phated]

I tried upgrading this action from a much older version, and now I get a bunch of cache failures. For example: https://github.com/grain-lang/libbinaryen/runs/4885304762?check_suite_focus=true

/usr/bin/tar --posix --use-compress-program zstd -T0 -cf cache.tzst -P -C /home/runner/work/libbinaryen/libbinaryen --files-from manifest.txt
385
Error: uploadChunk (start: 402653184, end: 436207615) failed: Cache service responded with 503

This happens consistently.