GHSA-9X9C-GHC5-JHW9 @astrojs/node's trailing slash handling causes open redirect issue

Summary Following https://github.com/withastro/astro/security/advisories/GHSA-cq8c-xv66-36gw, there's still an Open Redirect vulnerability in a subset of Astro deployment scenarios. Details Astro 5.12.8 fixed a case where https://example.com//astro.build/press would redirect to the external origi...