Upgrade to Angular 15 and Node 15

Author: jhades

.browserslistrc

@@ -3,13 +3,13 @@
 
 This repository contains the code of the course [Angular Universal In Depth](https://angular-university.io/course/angular-universal-course).
 
-This course repository is updated to Angular v14.
+This course repository is updated to Angular v15.
 
 ![Angular Universal In Depth](https://angular-university.s3-us-west-1.amazonaws.com/course-images/angular-universal-course.jpg)
 
 # Installation pre-requisites
 
-Please use  Node 16 long-term support (LTS) version.
+Please use  Node 18 long-term support (LTS) version.
 
 # Installing the Angular CLI
 

README.md

@@ -27,7 +27,6 @@
               "src/assets"
             ],
             "styles": [
-              "./node_modules/@angular/material/prebuilt-themes/purple-green.css",
               "src/styles.scss"
             ],
             "scripts": [],
@@ -170,4 +169,4 @@
   "cli": {
     "analytics": "fa1e8b50-e624-42fd-9564-a9c98d1ad337"
   }
-}
+}