Merge pull request #17633 from gtestault/openapi_resolve_relative_online_refs

fix(catalog-backend-module-openapi): resolve relative online refs fixes #17634

.changeset/hungry-peas-sing.md

@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-catalog-backend-module-openapi': patch
+---
+
+Fixed bug in `jsonSchemaRefPlaceholderResolver` where relative $ref files were resolved through file system instead of base URL of file

plugins/catalog-backend-module-openapi/src/lib/bundle.ts

@@ -65,6 +65,6 @@ export async function bundleFileWithRefs(
     },
   };
   const fileObject = parse(fileWithRefs);
-  const bundledObject = await $RefParser.bundle(fileObject, options);
+  const bundledObject = await $RefParser.bundle(baseUrl, fileObject, options);
   return stringify(bundledObject);
 }