Fix pricenode gradle build

[devinbileck]

As a result of changes done to the gradle build in #1862, I started encountering the following:

> Task :pricenode:jar FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':pricenode:jar'.
> Could not create ZIP 'C:\Users\Devin\Documents\GitHub\bisq-network\bisq\pricenode\build\libs\pricenode-0.7.2-SNAPSHOT
  .jar'

Issue
It was attempting to generate jar file with LF in filename.

Fix
Make sure to trim whitespace for version variable retrieved from file.

[ripcurlx]

utACK

[cbeams]

utACK. Not sure why this would occur only after the recent refactoring; the version.txt file nor the code for loading for loading it changed. In any case, the change here looks fine though.

[cbeams]

Are you always working / building on a Windows machine, @devinbileck? Would be good to know we have that kind of ‘coverage’.

[devinbileck]

Are you always working / building on a Windows machine

@cbeams Yes. Consider it covered :)