JCommander trims argument values from the command line

The current version of JCommander that we're using has a bug that trims arguments values from the command line: https://github.com/cbeust/jcommander/issues/417

The most recent version of it (1.78) has a fix for this bug: https://github.com/cbeust/jcommander/blob/master/src/main/java/com/beust/jcommander/JCommander.java#L912

Find the JCommander dependency declaration in the project and compare its current version with 1.78. Read the upstream JCommander.java change around line 912, then verify the project's command-line behavior to confirm that argument values retain their whitespace after the dependency update.

Written by the indexing model from the issue text.