iso8585 integration tests fail on Windows

[jamesnetherton]

Bug description

I cannot replicate it on Windows 11. But on the GitHub actions CI runner we see:

Caused by: java.text.ParseException: Invalid LLLVAR length -1378( DF) field 60 pos 203
	at com.solab.iso8583.parse.LllvarParseInfo.parse(LllvarParseInfo.java:50)
	at com.solab.iso8583.MessageFactory.parseMessage(MessageFactory.java:633)
	at com.solab.iso8583.MessageFactory.parseMessage(MessageFactory.java:431)
	at org.apache.camel.dataformat.iso8583.Iso8583DataFormat.unmarshal(Iso8583DataFormat.java:86)
	at org.apache.camel.spi.DataFormat.unmarshal(DataFormat.java:87)
	at org.apache.camel.support.processor.UnmarshalProcessor.process(UnmarshalProcessor.java:85)