sim:tests: Update expected bundle number

After
https://spacebeaker-review.googlesource.com/c/shodan/kata/projects/processmanager/+/22060,
the bundle cnode number updated from 24 to 26. Update the expected
string in the robot test accordingly.

Change-Id: Ic29176c312ea5f291fac5a9d2af4b55660e0e85f