fix(demo): updated angular material

Author: AnthonyNahas

demo/package-lock.json

@@ -29,14 +29,14 @@
   "dependencies": {
     "@angular-material-extensions/pages": "^2.1.0",
     "@angular/animations": "8.2.9",
-    "@angular/cdk": "^8.2.0",
+    "@angular/cdk": "^8.2.3",
     "@angular/common": "8.2.9",
     "@angular/compiler": "8.2.9",
     "@angular/core": "8.2.9",
     "@angular/fire": "^5.2.1",
     "@angular/flex-layout": "^8.0.0-beta.27",
     "@angular/forms": "8.2.9",
-    "@angular/material": "^8.2.0",
+    "@angular/material": "^8.2.3",
     "@angular/platform-browser": "8.2.9",
     "@angular/platform-browser-dynamic": "8.2.9",
     "@angular/platform-server": "8.2.9",