Fiber: CORS wildcard origins matched without a dot boundary, allowing credentialed cross-origin reads

Summary In v2.52.1 and v2.52.2 the CORS middleware matched a wildcard origin such as https://.example.com by suffix only, without a dot boundary and without comparing the scheme. Any origin whose host ends with the base domain, for example https://evil-example.com or http://notexample.com, was...