Upgrade all node dependencies

[theresnotime]

Using npm-check-updates:

$ ncu --help --doctor
Usage: ncu --doctor

Iteratively installs upgrades and runs tests to identify breaking upgrades.

$ ncu --doctor -u
Running tests before upgrading
npm install
npm run test
Upgrading all dependencies and re-running tests
ncu -u
npm install
npm run test
✓ Tests pass

 @symfony/webpack-encore    0.28  →     3.1
 copy-webpack-plugin         4.6  →    11.0
 css-loader                  2.1  →     6.7
 jquery                      3.3  →     3.6
 js-cookie                   2.2  →     3.0
 leaflet                   1.4.0  →   1.8.0
 less                        3.9  →     4.1
 less-loader                 4.1  →    11.0
 oojs-ui                  0.33.4  →  0.44.3
 wikimedia-ui-base          0.13  →    0.19
 eslint                   5.13.0  →  8.23.1
 eslint-config-wikimedia  0.10.1  →  0.23.0
 grunt                     1.0.2  →   1.5.3
 grunt-banana-checker      0.7.1  →  0.10.0
 qunit                     2.9.2  →  2.19.1

All dependencies upgraded and installed :)

[samwilson]

I'm getting this error when I run npm run assets:

[webpack-cli] Invalid options object. Copy Plugin has been initialized using an options object that does not match the API schema.
 - options[0] has an unknown property 'to'. These properties are valid:
   object { patterns, options? }
 - options[1] has an unknown property 'to'. These properties are valid:
   object { patterns, options? }

(With npm 6.14.11 and node v14.15.5.)