feat: Update frequenz-api-common to v0.8 and adapt to API changes#96

Marenz merged 2 commits intofrequenz-floss:v0.x.xfrequenz-floss/frequenz-client-common-python:v0.x.xfrom

Marenz:feat/update-api-common-v0.8Marenz/frequenz-client-common-python:feat/update-api-common-v0.8Copy head branch name to clipboard