title: Unable to update angular version
body: <p>I am trying to upgrade my angular application. The version of my angular application is 4.2.4 for Basic Apps. 
  I am using the steps given in <a href="https://update.angular.io/#4.2:8.0" rel="nofollow noreferrer">Angular Update Guide</a>. </p>
  
  <p>As per the guide I have to run the following</p>
  
  <pre><code>npm install -g @angular/cli
  npm install @angular/cli
  ng update @angular/cli
  </code></pre>
  
  <p>But when I tried executing the command </p>
  
  <pre><code>ng update @angular/cli
  </code></pre>
  
  <p>it gives me an error saying</p>
  
  <pre><code>Error: Cannot update safely because packages have conflicting dependencies. Package @angular/core would need to match both versions "7.2.15" and "8.2.7, which are not compatible.
  Cannot update safely because packages have conflicting dependencies. Package @angular/core would need to match both versions "7.2.15" and "8.2.7, which are not compatible.
  </code></pre>
  
  <p>this is what my package.json looks like</p>
  
  <pre><code>{
    "name": "stellar",
    "version": "0.0.0",
    "license": "MIT",
    "scripts": {
      "ng": "ng",
      "start": "ng serve",
      "build": "ng build",
      "test": "ng test",
      "lint": "ng lint",
      "e2e": "ng e2e"
    },
    "private": true,
    "dependencies": {
      "@angular/animations": "^4.2.4",
      "@angular/common": "^4.2.4",
      "@angular/compiler": "^4.2.4",
      "@angular/core": "^4.2.4",
      "@angular/forms": "^4.2.4",
      "@angular/http": "^4.2.4",
      "@angular/platform-browser": "^4.2.4",
      "@angular/platform-browser-dynamic": "^4.2.4",
      "@angular/router": "^4.2.4",
      "angular2-jwt": "^0.2.3",
      "chart.js": "^2.7.2",
      "core-js": "^2.4.1",
      "jquery": "^3.3.1",
      "ng2-archwizard": "^2.1.0",
      "ng2-charts": "^1.6.0",
      "ng2-toastr": "^4.1.2",
      "ng2-validation": "^4.2.0",
      "ngx-bootstrap": "^2.0.5",
      "npm": "^6.2.0",
      "rxjs": "^5.4.2",
      "slick-carousel": "^1.8.1",
      "zone.js": "^0.8.14"
    },
    "devDependencies": {
      "@angular/cli": "^1.7.4",
      "@angular/compiler-cli": "^4.2.4",
      "@angular/language-service": "^4.2.4",
      "@types/c3": "^0.6.0",
      "@types/jasmine": "~2.5.53",
      "@types/jasminewd2": "~2.0.2",
      "@types/node": "~6.0.60",
      "c3": "^0.6.2",
      "codelyzer": "~3.2.0",
      "jasmine-core": "~2.6.2",
      "jasmine-spec-reporter": "~4.1.0",
      "karma": "^2.0.5",
      "karma-chrome-launcher": "~2.1.1",
      "karma-cli": "~1.0.1",
      "karma-coverage-istanbul-reporter": "^1.2.1",
      "karma-jasmine": "~1.1.0",
      "karma-jasmine-html-reporter": "^0.2.2",
      "protractor": "^5.4.0",
      "ts-node": "~3.2.0",
      "tslint": "~5.7.0",
      "typescript": "~2.3.3"
    }
  }
  </code></pre>
  
  <p>Can somebody help to get this sorted</p>