build: update to Angular 12 RC and bump MDC (#960)

Updates the Angular packages to v12 RC and sync up the version of MDC.

Author: crisbeto

material.angular.io/material.angular.io/material.angular.io/material.angular.io/material.angular.io/package.json

@@ -35,38 +35,38 @@
   },
   "private": true,
   "dependencies": {
-    "@angular/animations": "^12.0.0-next.9",
-    "@angular/cdk": "^12.0.0-next.7",
-    "@angular/cdk-experimental": "^12.0.0-next.7",
-    "@angular/common": "^12.0.0-next.9",
-    "@angular/compiler": "^12.0.0-next.9",
+    "@angular/animations": "^12.0.0-rc.0",
+    "@angular/cdk": "^12.0.0-rc.0",
+    "@angular/cdk-experimental": "^12.0.0-rc.0",
+    "@angular/common": "^12.0.0-rc.0",
+    "@angular/compiler": "^12.0.0-rc.0",
     "@angular/components-examples": "angular/material2-docs-content#master",
-    "@angular/core": "^12.0.0-next.9",
-    "@angular/forms": "^12.0.0-next.9",
-    "@angular/google-maps": "^12.0.0-next.7",
-    "@angular/material": "^12.0.0-next.7",
-    "@angular/material-experimental": "^12.0.0-next.7",
-    "@angular/material-moment-adapter": "^12.0.0-next.7",
-    "@angular/platform-browser": "^12.0.0-next.9",
-    "@angular/platform-browser-dynamic": "^12.0.0-next.9",
-    "@angular/router": "^12.0.0-next.9",
-    "@angular/youtube-player": "^12.0.0-next.7",
-    "material-components-web": "10.0.0-canary.2ed2d829b.0",
+    "@angular/core": "^12.0.0-rc.0",
+    "@angular/forms": "^12.0.0-rc.0",
+    "@angular/google-maps": "^12.0.0-rc.0",
+    "@angular/material": "^12.0.0-rc.0",
+    "@angular/material-experimental": "^12.0.0-rc.0",
+    "@angular/material-moment-adapter": "^12.0.0-rc.0",
+    "@angular/platform-browser": "^12.0.0-rc.0",
+    "@angular/platform-browser-dynamic": "^12.0.0-rc.0",
+    "@angular/router": "^12.0.0-rc.0",
+    "@angular/youtube-player": "^12.0.0-rc.0",
+    "material-components-web": "12.0.0-canary.b52196498.0",
     "moment": "^2.29.1",
     "rxjs": "^6.6.6",
     "tslib": "^2.1.0",
     "zone.js": "~0.11.4"
   },
   "devDependencies": {
-    "@angular-devkit/build-angular": "^12.0.0-next.9",
+    "@angular-devkit/build-angular": "^12.0.0-rc.0",
     "@angular-eslint/builder": "4.0.0",
     "@angular-eslint/eslint-plugin": "4.0.0",
     "@angular-eslint/eslint-plugin-template": "4.0.0",
     "@angular-eslint/schematics": "4.0.0",
     "@angular-eslint/template-parser": "4.0.0",
-    "@angular/cli": "^12.0.0-next.9",
-    "@angular/compiler-cli": "^12.0.0-next.9",
-    "@angular/localize": "^12.0.0-next.9",
+    "@angular/cli": "^12.0.0-rc.0",
+    "@angular/compiler-cli": "^12.0.0-rc.0",
+    "@angular/localize": "^12.0.0-rc.0",
     "@types/imagemin": "^7.0.0",
     "@types/jasmine": "^3.6.6",
     "@types/node": "^14.14.22",