string(string, delimeter)

actions:
  - name: keep-slack
    foreach: "{{steps.this.results}}"
    condition:
      - type: threshold
        value: "keep.first(keep.split({{ foreach.value }}, ' '))"
        # each line looks like:
        # ' 64 2023-02-09 20:08:16,773 INFO: uvicorn.access -: 127.0.0.1:53948 - "GET /test2 HTTP/1.1" 503 Service Unavailable'
        # where the "64" is the number of the
        compare_to: 70