cli: move yarn utils into versioning lib

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

packages/cli/src/lib/versioning/packages.test.ts

@@ -15,7 +15,7 @@
  */
 
 import * as runObj from '../run';
-import * as yarn from '../yarn';
+import * as yarn from './yarn';
 import { fetchPackageInfo, mapDependencies } from './packages';
 import { NotFoundError } from '../errors';
 import { createMockDirectory } from '@backstage/backend-test-utils';
@@ -27,7 +27,7 @@ jest.mock('../run', () => {
   };
 });
 
-jest.mock('../yarn', () => {
+jest.mock('./yarn', () => {
   return {
     detectYarnVersion: jest.fn(),
   };

packages/cli/src/lib/versioning/packages.ts

@@ -17,7 +17,7 @@
 import { minimatch } from 'minimatch';
 import { getPackages } from '@manypkg/get-packages';
 import { NotFoundError } from '../errors';
-import { detectYarnVersion } from '../yarn';
+import { detectYarnVersion } from './yarn';
 import { execFile } from '../run';
 
 const DEP_TYPES = [