TYPO3 Core

Recently from time to time phpstan ci runs are failing with following error message:

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     Error                                                                    
 -- ------------------------------------------------------------------------- 
     Reached internal errors count limit of 50, exiting...                    
     Internal error: Child process timed out after 600.0 seconds. Try making  
     it longer with parallel.processTimeout setting.                          
 -- -------------------------------------------------------------------------

As a intermediate solution this timeout should be increased. Deeper investigation
and maybe finding a solution to avoid such long subprocess run times is the more
reasonable way - but to avoid a lot of test failes, better trade a longer runtime
in ci than a linger time to find a proper fix for it as a first solution.