Merge pull request #3459 from backstage/blam/fix-windows

chore: use path.join to fix master build on windows

packages/config-loader/src/lib/schema/collect.test.ts

@@ -16,6 +16,7 @@
 
 import mockFs from 'mock-fs';
 import { collectConfigSchemas } from './collect';
+import path from 'path';
 
 const mockSchema = {
   type: 'object',
@@ -56,7 +57,7 @@ describe('collectConfigSchemas', () => {
 
     await expect(collectConfigSchemas(['a'])).resolves.toEqual([
       {
-        path: 'node_modules/a/package.json',
+        path: path.join('node_modules', 'a', 'package.json'),
         value: mockSchema,
       },
     ]);
@@ -163,15 +164,15 @@ describe('collectConfigSchemas', () => {
 
     await expect(collectConfigSchemas(['a', 'b', 'c'])).resolves.toEqual([
       {
-        path: 'node_modules/a/package.json',
+        path: path.join('node_modules', 'a', 'package.json'),
         value: { ...mockSchema, title: 'inline' },
       },
       {
-        path: 'node_modules/b/schema.json',
+        path: path.join('node_modules', 'b', 'schema.json'),
         value: { ...mockSchema, title: 'external' },
       },
       {
-        path: 'node_modules/c/schema.d.ts',
+        path: path.join('node_modules', 'c', 'schema.d.ts'),
         value: {
           $schema: 'http://json-schema.org/draft-07/schema#',
           type: 'object',