codemods,workflows: fix codemods tests on windows

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

.github/workflows/master-win.yml

@@ -53,6 +53,10 @@ jobs:
       - name: verify type dependencies
         run: yarn lint:type-deps
 
+      # The core packages need to be built for the codemods tests to work
+      - name: build core packages
+        run: lerna run --scope @backstage/core-* build
+
       - name: test
         run: yarn lerna -- run test
         env:

packages/codemods/src/tests/core-imports.test.ts

@@ -25,7 +25,8 @@ function runTransform(source: string) {
     stats: () => undefined,
     report: () => undefined,
   };
-  return coreImportTransform({ source, file: 'test.ts' }, api);
+  const result = coreImportTransform({ source, file: 'test.ts' }, api);
+  return result?.split('\r\n').join('\n');
 }
 
 describe('core-imports', () => {