scripts: check_compliance: Fix traceback in junitparser

junitparser had a bug causing a traceback when running the checkpatch
check compliance module, fix is in 4.0.1 of junitparser from this PR:
https://github.com/weiwei/junitparser/pull/168



Update requirements to make sure we get this version.

Signed-off-by: Declan Snyder <declan.snyder@nxp.com>