Set version to '3.0.0-alpha'

Author: ronaldbarendse

version.json

@@ -1,17 +1,14 @@
 {
-  "$schema": "https://raw.githubusercontent.com/dotnet/Nerdbank.GitVersioning/master/src/NerdBank.GitVersioning/version.schema.json",
-  "version": "2.2.0-alpha",
+  "$schema": "https://raw.githubusercontent.com/dotnet/Nerdbank.GitVersioning/main/src/NerdBank.GitVersioning/version.schema.json",
+  "version": "3.0.0-alpha",
   "publicReleaseRefSpec": [
-    "^refs/heads/master$",
     "^refs/heads/main$",
-    "^refs/tags/release-",
     "^refs/tags/v"
   ],
   "cloudBuild": {
     "buildNumber": {
       "enabled": true
-    },
-    "setVersionVariables": true
+    }
   },
   "release": {
     "branchName": "release/{version}"