Upgrade to webpack5

[carlosmaniero]

Webpack 5 "differentiates between files and auxiliaryFiles now." - https://webpack.js.org/blog/2020-10-10-webpack-5-release/

It was not need to create a new test since css-map-entry covers this scenario. The test break after the upgrade so I just needed to make it pass 😃

Other changes:

• I upgraded jest which requires node 10 >
• I removed the hardcoded npm version from pipeline because the version defined breaks with node 10.
• I also add an opt-out flag for logging.

[carlosmaniero]

Any thoughts on this?