Clean Up the Log File Challenge

You're given a messy logfile and your boss wants it cleaned up or you're fired!
Transform this into a clean, minimal log by removing all lines that:
Start with DEBUG or TRACE
Leave only INFO and ERROR lines
Also, Add a blank line between each remaining log entry

challenge.txt :set list

Start

 1INFO 2024-04-01 10:00:00 Starting process
 2DEBUG pid=4837 user=admin
 3ERROR 2024-04-01 10:00:02 failed to connect to database
 4TRACE connection timeout after 5000ms
 5DEBUG retrying connection...
 6INFO 2024-04-01 10:00:05 Connection successful
 7DEBUG pid=4837 user=admin

Goal

 1INFO 2024-04-01 10:00:00 Starting process
 2
 3ERROR 2024-04-01 10:00:02 failed to connect to database
 4
 5INFO 2024-04-01 10:00:05 Connection successful

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