Update style-loader from 0.18.2 to 0.19.0 in addons/knobs

[dependencies]

style-loader has been updated to 0.19.0 in addons/knobs by dependencies.io

0.19.0

No content found.

[codecov]

Codecov Report

Merging #1958 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1958   +/-   ##
=======================================
  Coverage   21.38%   21.38%           
=======================================
  Files         262      262           
  Lines        5757     5757           
  Branches      702      690   -12     
=======================================
  Hits         1231     1231           
- Misses       3989     4008   +19     
+ Partials      537      518   -19

Impacted Files	Coverage Δ
app/react/src/server/config/babel.js	0% <0%> (-100%)	⬇️
app/react/src/server/babel_config.js	0% <0%> (-77.42%)	⬇️
.../src/manager/containers/CommentsPanel/dataStore.js	34.97% <0%> (ø)	⬆️
...es__/update-addon-info/update-addon-info.output.js	0% <0%> (ø)	⬆️
...codemod/src/transforms/update-organisation-name.js	40.62% <0%> (ø)	⬆️
app/react-native/src/bin/storybook-start.js	0% <0%> (ø)	⬆️
addons/knobs/src/components/types/Object.js	5.81% <0%> (ø)	⬆️
addons/info/src/components/Node.js	39.7% <0%> (ø)	⬆️
addons/events/src/components/Event.js	0% <0%> (ø)	⬆️
app/react/src/client/preview/error_display.js	0% <0%> (ø)	⬆️
... and 21 more

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