feat(@ngtools/webpack): 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.

Author: alan-agius4

Diff for: packages/ngtools/webpack/package.json

@@ -23,7 +23,7 @@
   "dependencies": {},
   "peerDependencies": {
     "@angular/compiler-cli": "^15.0.0-next",
-    "typescript": ">=4.6.2 <4.9",
+    "typescript": "~4.8.2",
     "webpack": "^5.54.0"
   },
   "devDependencies": {