Test CI against jackalope 2.0@dev version

[alexander-schranz]

A new version is in work by @dbu which uses static typings and get ride of doctrine/cache. This pull request tests CI against jackalope 2.0@dev version.

[alexander-schranz]

Current errors:

• features/all/phpcr_lock_unlock.feature:11
• features/all/phpcr_session_import.feature:12
• features/all/phpcr_session_import.feature:36

Type error: Jackalope\Transport\Jackrabbit\Client::lockNode(): Argument #4 ($timeoutHint) must be of type int, null given, called in vendor/jackalope/jackalope/src/Jackalope/Lock/LockManager.php on line 139 (Behat\Testwork\Call\Exception\FatalThrowableError)

Type error: Jackalope\Property::_setLength(): Argument #1 ($length) must be of type int, array given, called in vendor/jackalope/jackalope/src/Jackalope/Node.php on line 205 (Behat\Testwork\Call\Exception\FatalThrowableError)

[dbu]

merged #220