release: bump version to 12.0.0-rc.0 w/ changelog (#22531)

Author: wagnermaciel

CHANGELOG.md

@@ -1,3 +1,14 @@
+# 12.0.0-rc.0 "charcoal-pencil" (2021-04-21)
+
+### material
+
+|            |                       |
+| ---------- | --------------------- |
+| bug fix |  **autocomplete:** error if keydown is dispatched too early ([#22513](https://github.com/angular/components/issues/22513)) ([9e68bf87a98244eb7494b30be47bcea241262013](https://github.com/angular/components/commit/9e68bf87a98244eb7494b30be47bcea241262013)), closes [#22511](https://github.com/angular/components/issues/22511) |
+| bug fix |  **schematics:** replace removed variables with their values in sass api migration ([#22505](https://github.com/angular/components/issues/22505)) ([4f6bf3ae00c79729f4340df297dab58a93645e61](https://github.com/angular/components/commit/4f6bf3ae00c79729f4340df297dab58a93645e61)) |
+| bug fix |  **snack-bar:** clear timeout upon dismiss with action ([#22485](https://github.com/angular/components/issues/22485)) ([f3dcfa9033ba07bb97cbcdf8d85f9a275bc67904](https://github.com/angular/components/commit/f3dcfa9033ba07bb97cbcdf8d85f9a275bc67904)), closes [#4860](https://github.com/angular/components/issues/4860) |
+
+
 # 12.0.0-next.7 "porcelain-daydream" (2021-04-14)
 
 ### cdk

package.json

@@ -50,7 +50,7 @@
     "check-mdc-exports": "ts-node --project scripts/tsconfig.json scripts/check-mdc-exports.ts",
     "check-tools": "yarn tsc --project tools/tsconfig-ci.json"
   },
-  "version": "12.0.0-next.7",
+  "version": "12.0.0-rc.0",
   "dependencies": {
     "@angular/animations": "^12.0.0-next.9",
     "@angular/common": "^12.0.0-next.9",