version: Fix version test for alpha & beta releases (#2219)

Author: IvanGoncharov

src/__tests__/version-test.js

@@ -8,7 +8,7 @@ import { version, versionInfo } from '../version';
 describe('Version', () => {
   it('version', () => {
     expect(version).to.be.a('string');
-    expect(version).to.match(/^\d+\.\d+\.\d(-rc.\d+)?$/);
+    expect(version).to.match(/^\d+\.\d+\.\d(-(alpha|beta|rc)\.\d+)?$/);
   });
 
   it('versionInfo', () => {