[WFLY-3550] - Upgrade PicketLink to 2.6.0.Final.
WFLY-3478 fixing mask verification
Merge pull request #6435 from pedroigor/8.x

[8.x] [WFLY-3550] - Upgrade PicketLink to 2.6.0.Final.
Merge pull request #6439 from istudens/WFLY-3478_8.x

[8.x] WFLY-3478 fixing mask verification