chore(nbgv): set version via CI: 3.2.1

Author: varndellwagglebee

version.json

@@ -1,12 +1,9 @@
 {
   "$schema": "https://raw.githubusercontent.com/dotnet/Nerdbank.GitVersioning/main/src/NerdBank.GitVersioning/version.schema.json",
-  "version": "3.2-alpha",
+  "version": "3.2.1",
   "publicReleaseRefSpec": [
     "^refs/heads/main$",
     "^refs/heads/hotfix\\/.+$",
     "^refs/heads/v\\d+\\.\\d+$"
-  ],
-  "release": {
-    "firstUnstableTag": "alpha"
-  }
+  ]
 }