Fix catalog:write on windows systems

Signed-off-by: Fredrik Adelöw <freben@gmail.com>

plugins/scaffolder-backend/src/scaffolder/actions/builtin/catalog/write.test.ts

@@ -37,6 +37,7 @@ describe('catalog:write', () => {
     output: jest.fn(),
     createTemporaryDirectory: jest.fn(),
   };
+
   beforeEach(() => {
     jest.resetAllMocks();
   });

plugins/scaffolder-backend/src/scaffolder/actions/builtin/catalog/write.ts

@@ -15,6 +15,7 @@
  */
 
 import fs from 'fs-extra';
+import { resolve as resolvePath } from 'path';
 import { createTemplateAction } from '../../createTemplateAction';
 import * as yaml from 'yaml';
 import { Entity } from '@backstage/catalog-model';
@@ -41,7 +42,7 @@ export function createCatalogWriteAction() {
       const { entity } = ctx.input;
 
       await fs.writeFile(
-        `${ctx.workspacePath}/catalog-info.yaml`,
+        resolvePath(ctx.workspacePath, 'catalog-info.yaml'),
         yaml.stringify(entity),
       );
     },