Update pexpect version to 3.3
Update pexpect version to 3.3

Version 3.3 is needed for echo disabled functionality and some other improvements.
csm-aut/csm,csm-aut/csm,smjurcak/csm,csm-aut/csm,kstaniek/csm,smjurcak/csm,kstaniek/csm,smjurcak/csm,csm-aut/csm,kstaniek/csm,kstaniek/csm,smjurcak/csm