ci.github: run lint step before test step (#3294)
ci.github: run lint step before test step (#3294)


chhe/streamlink,beardypig/streamlink,beardypig/streamlink,bastimeyer/streamlink,streamlink/streamlink,melmorabity/streamlink,melmorabity/streamlink,gravyboat/streamlink,bastimeyer/streamlink,gravyboat/streamlink,chhe/streamlink,streamlink/streamlink