Bump frequenz-repo-config from 0.13.5 to 0.13.8#220

Marenz wants to merge 1 commit intofrequenz-floss:v1.x.xfrequenz-floss/frequenz-dispatch-python:v1.x.xfrom

Marenz:update-repo-configMarenz/frequenz-dispatch-python:update-repo-configCopy head branch name to clipboard