fixup! Use Nerdbank.GitVersioning for build versioning

Author: sharwell

version.json

@@ -1,3 +1,8 @@
 {
-  "version": "5.0"
+  "version": "5.0",
+  "cloudBuild": {
+    "buildNumber": {
+      "enabled": true
+    }
+  }
 }