Use correct package.json file

Author: Adam Gleitman

.ado/versionUtils.js

@@ -4,7 +4,7 @@ const path = require("path");
 const semver = require('semver');
 const {execSync} = require('child_process');
 
-const pkgJsonPath = path.resolve(__dirname, "../package.json");
+const pkgJsonPath = path.resolve(__dirname, "../packages/react-native/package.json");
 let publishBranchName = '';
 try {
   publishBranchName = process.env.BUILD_SOURCEBRANCH.match(/refs\/heads\/(.*)/)[1];