Upgrade to Angular 12

angular.json

@@ -23,7 +23,6 @@
           "skipTests": true
         },
         "@schematics/angular:module": {
-          "skipTests": true
         },
         "@schematics/angular:pipe": {
           "skipTests": true
@@ -39,7 +38,6 @@
         "build": {
           "builder": "@angular-devkit/build-angular:browser",
           "options": {
-            "aot": true,
             "outputPath": "dist",
             "index": "src/index.html",
             "main": "src/main.ts",
@@ -56,7 +54,13 @@
             "scripts": [
               "src/assets/semantic/jqueryImport.js",
               "src/assets/semantic/dist/semantic.min.js"
-            ]
+            ],
+            "vendorChunk": true,
+            "extractLicenses": false,
+            "buildOptimizer": false,
+            "sourceMap": true,
+            "optimization": false,
+            "namedChunks": true
           },
           "configurations": {
             "production": {
@@ -81,13 +85,13 @@
               "outputHashing": "all",
               "sourceMap": false,
               "namedChunks": false,
-              "aot": true,
               "watch": false,
               "extractLicenses": true,
               "vendorChunk": false,
               "buildOptimizer": true
             }
-          }
+          },
+          "defaultConfiguration": ""
         },
         "serve": {
           "builder": "@angular-devkit/build-angular:dev-server",