93590895b5
This commit updates the docs examples to Angular v12.1.3. In addition to updating the dependencies versions, it also updates the projects' structure and configs to more closely match what a new v12 CLI app would look like. See, also, the [diff][1] between a basic v11.2.11 CLI app and a v12.1.3 one. [1]: https://github.com/cexbrayat/angular-cli-diff/compare/11.2.11..12.1.3 PR Close #42949