fix broken import

Author: Feiyang1

scripts/release/utils/npm.js

@@ -15,7 +15,7 @@
  * limitations under the License.
  */
 
-const { projectRoot: root } = require('./constants');
+const { projectRoot: root } = require('../../utils');
 const { spawn, exec } = require('child-process-promise');
 const { mapPkgNameToPkgPath } = require('./workspace');
 const { readFile: _readFile } = require('fs');

scripts/release/utils/tests.js

@@ -16,7 +16,7 @@
  */
 
 const { spawn } = require('child-process-promise');
-const { projectRoot: root } = require('./constants');
+const { projectRoot: root } = require('../../utils');
 const ora = require('ora');
 
 exports.runTests = async () => {

scripts/release/utils/yarn.js

@@ -16,7 +16,7 @@
  */
 
 const { spawn } = require('child-process-promise');
-const { projectRoot: root } = require('./constants');
+const { projectRoot: root } = require('../../utils');
 const ora = require('ora');
 
 exports.reinstallDeps = async () => {