build: update Angular tooling packages to 13.0.0-next.6 (angular#43417)

This is a followup on angular#43343

PR Close angular#43417

Author: alan-agius4

package.json

@@ -41,11 +41,11 @@
   },
   "// 1": "dependencies are used locally and by bazel",
   "dependencies": {
-    "@angular-devkit/build-angular": "12.0.4",
-    "@angular-devkit/build-optimizer": "0.1200.4",
-    "@angular-devkit/core": "12.0.4",
-    "@angular-devkit/schematics": "12.0.4",
-    "@angular/cli": "12.0.4",
+    "@angular-devkit/build-angular": "13.0.0-next.6",
+    "@angular-devkit/build-optimizer": "0.1300.0-next.6",
+    "@angular-devkit/core": "13.0.0-next.6",
+    "@angular-devkit/schematics": "13.0.0-next.6",
+    "@angular/cli": "13.0.0-next.6",
     "@angular/common-12": "npm:@angular/common@12.2.2",
     "@angular/core-12": "npm:@angular/core@12.2.2",
     "@babel/cli": "7.15.4",
@@ -64,7 +64,7 @@
     "@bazel/terser": "4.0.0",
     "@bazel/typescript": "4.0.0",
     "@microsoft/api-extractor": "7.18.7",
-    "@schematics/angular": "12.0.4",
+    "@schematics/angular": "13.0.0-next.6",
     "@types/angular": "^1.6.47",
     "@types/babel__core": "7.1.6",
     "@types/babel__generator": "7.6.1",