Bump webpack, @angular-devkit/build-angular and @angular-builders/cus…

…tom-webpack

Bumps [webpack](https://github.com/webpack/webpack) to 5.76.1 and updates ancestor dependencies [webpack](https://github.com/webpack/webpack), [@angular-devkit/build-angular](https://github.com/angular/angular-cli) and [@angular-builders/custom-webpack](https://github.com/just-jeb/angular-builders/tree/HEAD/packages/custom-webpack). These dependencies need to be updated together.


Updates `webpack` from 5.50.0 to 5.76.1
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](webpack/webpack@v5.50.0...v5.76.1)

Updates `@angular-devkit/build-angular` from 12.2.18 to 15.2.4
- [Release notes](https://github.com/angular/angular-cli/releases)
- [Changelog](https://github.com/angular/angular-cli/blob/main/CHANGELOG.md)
- [Commits](angular/angular-cli@12.2.18...15.2.4)

Updates `@angular-builders/custom-webpack` from 12.1.3 to 15.0.0
- [Release notes](https://github.com/just-jeb/angular-builders/releases)
- [Changelog](https://github.com/just-jeb/angular-builders/blob/master/packages/custom-webpack/CHANGELOG.md)
- [Commits](https://github.com/just-jeb/angular-builders/commits/@angular-builders/custom-webpack@15.0.0/packages/custom-webpack)

---
updated-dependencies:
- dependency-name: webpack
  dependency-type: indirect
- dependency-name: "@angular-devkit/build-angular"
  dependency-type: direct:development
- dependency-name: "@angular-builders/custom-webpack"
  dependency-type: direct:development
...

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