Tweak version settings

Author: ccheetham

version.json

@@ -2,8 +2,7 @@
   "$schema": "https://raw.githubusercontent.com/dotnet/Nerdbank.GitVersioning/master/src/NerdBank.GitVersioning/version.schema.json",
   "version": "1.2.0",
   "publicReleaseRefSpec": [
-    "^refs/heads/main$",
-    "^refs/heads/\\d+\\.\\d+$"
+    "^refs/heads/release/\\d+\\.\\d+$"
   ],
   "cloudBuild": {
     "buildNumber": {