Support Angular 13

Is your feature request related to a problem? Please describe.

Due to this plugin depending on an old @angular version, it fails to work with angular 13. I believe this is due to a typescript version change. causing the legacy @ngtools/webpack plugin to no longer work

/webpack/src/ivy/plugin.js is an ES module file as it is a .js file whose nearest parent package.json contains "type": "module" which defines all .js files in that package scope as ES modules.
Instead rename index.js to end in .cjs, change the requiring code to use import(), or remove "type": "module" from ../package.json

Describe the solution you’d like

A new major version of @angular-builders/jest and @angular-builders/custom-webpack both supporting angular 13

Additional context There is a workaround. Adding:

  "resolutions": {
    "@angular/compiler": "13.0.0",
    "@angular/cli": "13.0.0",
    "@angular-devkit/build-angular": "~13.0.0"
    }

to package json and this works fine.

[just-jeb]

This PR will resolve it. You’re not supposed to use Angular Builders 12 with Angular 13 (see the docs). I expect the PR to be merged in the next few days, please be patient 😄

[just-jeb]

Aaaand v13 is officially out.