Bump pytest-cov from 3.0.0 to 4.0.0 (#514)
Bump pytest-cov from 3.0.0 to 4.0.0 (#514)

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
theolind/pymysensors