release: udpate next site with v12 (#931)

Author: annieyw

package.json

@@ -34,33 +34,33 @@
   },
   "private": true,
   "dependencies": {
-    "@angular/animations": "^11.2.5",
-    "@angular/cdk": "^11.2.4",
-    "@angular/cdk-experimental": "^11.2.4",
-    "@angular/common": "^11.2.5",
-    "@angular/compiler": "^11.2.5",
-    "@angular/components-examples": "angular/material2-docs-content#11.2.x",
-    "@angular/core": "^11.2.5",
-    "@angular/forms": "^11.2.5",
-    "@angular/google-maps": "^11.2.4",
-    "@angular/material": "^11.2.4",
-    "@angular/material-experimental": "^11.2.4",
-    "@angular/material-moment-adapter": "^11.2.4",
-    "@angular/platform-browser": "^11.2.5",
-    "@angular/platform-browser-dynamic": "^11.2.5",
-    "@angular/router": "^11.2.5",
-    "@angular/youtube-player": "^11.2.4",
+    "@angular/animations": "^12.0.0-next.4",
+    "@angular/cdk": "^12.0.0-next.2",
+    "@angular/cdk-experimental": "^12.0.0-next.2",
+    "@angular/common": "^12.0.0-next.4",
+    "@angular/compiler": "^12.0.0-next.4",
+    "@angular/components-examples": "angular/material2-docs-content#master",
+    "@angular/core": "^12.0.0-next.4",
+    "@angular/forms": "^12.0.0-next.4",
+    "@angular/google-maps": "^12.0.0-next.2",
+    "@angular/material": "^12.0.0-next.2",
+    "@angular/material-experimental": "^12.0.0-next.2",
+    "@angular/material-moment-adapter": "^12.0.0-next.2",
+    "@angular/platform-browser": "^12.0.0-next.4",
+    "@angular/platform-browser-dynamic": "^12.0.0-next.4",
+    "@angular/router": "^12.0.0-next.4",
+    "@angular/youtube-player": "^12.0.0-next.2",
     "material-components-web": "10.0.0-canary.2ed2d829b.0",
     "moment": "^2.29.1",
     "rxjs": "^6.6.6",
     "tslib": "^2.1.0",
     "zone.js": "^0.11.4"
   },
   "devDependencies": {
-    "@angular-devkit/build-angular": "^0.1102.4",
-    "@angular/cli": "^11.2.4",
-    "@angular/compiler-cli": "^11.2.5",
-    "@angular/localize": "^11.2.5",
+    "@angular-devkit/build-angular": "^0.1200.0-next.4",
+    "@angular/cli": "^12.0.0-next.4",
+    "@angular/compiler-cli": "^12.0.0-next.4",
+    "@angular/localize": "^12.0.0-next.4",
     "@types/imagemin": "^7.0.0",
     "@types/jasmine": "^3.6.6",
     "@types/node": "^12.20.5",