[3.10] bpo-44647: Fix test_httpservers failing on Unicode characters in os.environ on Windows (GH-27161) by miss-islington · Pull Request #27169 · python/cpython

…nviron on Windows (pythonGH-27161)

pythonGH-23638 introduced a new test for Accept: headers in CGI HTTP servers. This test serializes all of os.environ on the server side. For non-UTF8 locales this can fail for some Unicode characters found in environment variables. This change fixes the HTTP_ACCEPT test.
(cherry picked from commit 82b218f)

Co-authored-by: Łukasz Langa <lukasz@langa.pl>