[TASK] Bamboo: use udiff format for php-cs-fixer diff option

The option produces nice compact output instead of printing whole file.

Resolves: #83335
Releases: master, 8.7
Change-Id: I3b5fb0ab004c653751c4bc3e7f8e1079fcc66235
Reviewed-on: https://review.typo3.org/55081


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Susanne Moog <susanne.moog@typo3.org>
Tested-by: Susanne Moog <susanne.moog@typo3.org>