Upgrade pycodestyle to 2.4.0
Upgrade pycodestyle to 2.4.0

mozmar/snippets-service,mozilla/snippets-service,glogiotatidis/snippets-service,glogiotatidis/snippets-service,glogiotatidis/snippets-service,mozilla/snippets-service,mozilla/snippets-service,mozilla/snippets-service,mozmar/snippets-service,mozmar/snippets-service,mozmar/snippets-service,glogiotatidis/snippets-service