feat(@angular-devkit/build-angular): drop support for TypeScript 4.6 and 4.7
feat(@angular-devkit/build-angular): drop support for TypeScript 4.6 and 4.7

This commit drops support for TypeScript 4.6 and 4.7

BREAKING CHANGE: TypeScript versions older than 4.8.2 are no longer supported.

clydin/angular-cli,angular/angular-cli,clydin/angular-cli,angular/angular-cli,angular/angular-cli,clydin/angular-cli,angular/angular-cli,clydin/angular-cli