Restrict phpstan to 0.9.x
Restrict phpstan to 0.9.x

The new version of phpstan while great results in a bunch of
errors/warnings we need to address. This gets us back to a passing build
on master.

ndm2/cakephp,ndm2/cakephp,davidyell/cakephp,cakephp/cakephp,tenkoma/cakephp,ADmad/cakephp,dakota/cakephp,petteyg/cakephp,cakephp/cakephp,cakephp/cakephp,CakeDC/cakephp,garethellis36/cakephp,ndm2/cakephp,tenkoma/cakephp,dakota/cakephp,mvdriel/cakephp,ADmad/cakephp,garethellis36/cakephp,garethellis36/cakephp,petteyg/cakephp,CakeDC/cakephp,davidyell/cakephp,cakephp/cakephp,CakeDC/cakephp,petteyg/cakephp,ndm2/cakephp,mvdriel/cakephp,ADmad/cakephp,tenkoma/cakephp,CakeDC/cakephp,dakota/cakephp,dakota/cakephp,garethellis36/cakephp,petteyg/cakephp,mvdriel/cakephp,davidyell/cakephp,ADmad/cakephp,mvdriel/cakephp,tenkoma/cakephp