chore: set up for rc1 release (#2383)

Author: gavinbarron

.github/workflows/push-preview-release.yml

@@ -4,7 +4,7 @@
 name: Create Preview release
 on:
   push:
-    tags: ['v3.*-preview.*']
+    tags: ['v3.*-preview.*', 'v3.*-rc.*']
 
 jobs:
   version:

package.json

@@ -1,7 +1,7 @@
 {
   "name": "root",
   "private": true,
-  "version": "3.0.0-preview.2",
+  "version": "3.0.0-rc.1",
   "workspaces": {
     "packages": [
       "packages/*",