Main database contains one invalid ICAO number

[rickstaa]

Describe the bug

As pointed out by @dziban303, the current https://github.com/sdr-enthusiasts/plane-alert-db/blob/main/plane-alert-db.csv database contains one $ICAO that is not a valid hexadecimal:

https://github.com/sdr-enthusiasts/plane-alert-db/blob/c9f0aae3b6e8935de56de33b6cfdd38700651c1e/plane-alert-db.csv#L2006

8.40E+11,JA012G,Japan Civil Aviation Bureau,Cessna Citation CJ4,C25C,Civ,Flight Inspection,Fight Calibration,Trundle Wheel,Dogs with Jobs,https://tinyurl.com/ythr9kku

Expected behaviour

The correct ICAO value should replace this.

Screenshots / Live demo link

No response

Additional context

We can uncomment the following line if this is fixed:

plane-alert-db/scripts/check_main_databases.py

Lines 150 to 152 in 8449559

	# contains_valid_hexes(
	# main_df
	# ) # NOTE: This is commented out because there are invalid values in the database.