Change master to be release branch

Author: jviau

src/version.json

@@ -2,7 +2,7 @@
   "$schema": "https://raw.githubusercontent.com/AArnott/Nerdbank.GitVersioning/master/src/NerdBank.GitVersioning/version.schema.json",
   "version": "0.9",
   "publicReleaseRefSpec": [
-    "^refs/tags/v\\d\\.\\d" // we release via tags starting with vN.N
+    "^refs/heads/master$", // we release out of master
   ],
   "cloudBuild": {
     "buildNumber": {