GHSA-99F9-GV72-FW9R Bref Doesn't Support Multiple Value Headers in ApiGatewayFormatV2

Impacted Resources bref/src/Event/Http/HttpResponse.php:61-90 Description When Bref is used in combination with an API Gateway with the v2 format, it does not handle multiple values headers. Precisely, if PHP generates a response with two headers having the same key but different values only the...