feat(@schematics/angular): update ng-packagr to 4.2.0

Author: alan-agius4

packages/schematics/angular/library/index.ts

@@ -107,7 +107,7 @@ function addDependenciesToPackageJson() {
       {
         type: NodeDependencyType.Dev,
         name: 'ng-packagr',
-        version: '^4.1.0',
+        version: '^4.2.0',
       },
       {
         type: NodeDependencyType.Dev,

packages/schematics/angular/library/index_spec.ts

@@ -138,7 +138,7 @@ describe('Library Schematic', () => {
       const tree = schematicRunner.runSchematic('library', defaultOptions, workspaceTree);
 
       const packageJson = getJsonFileContent(tree, 'package.json');
-      expect(packageJson.devDependencies['ng-packagr']).toEqual('^4.1.0');
+      expect(packageJson.devDependencies['ng-packagr']).toEqual('^4.2.0');
       expect(packageJson.devDependencies['@angular-devkit/build-ng-packagr'])
         .toEqual(latestVersions.DevkitBuildNgPackagr);
     });