Bump time-machine from 2.19.0 to 3.1.0#230

Marenz merged 2 commits intov1.x.xfrequenz-floss/frequenz-dispatch-python:v1.x.xfrom

dependabot/pip/time-machine-3.1.0frequenz-floss/frequenz-dispatch-python:dependabot/pip/time-machine-3.1.0Copy head branch name to clipboard