See https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.28_release_notes Enable TLS 1.3 (draft) support per https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.28_release_notes#Request_to_test_and_prepare_for_TLS_1.3.
See https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.28_release_notes Enable TLS 1.3 (draft) support per https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.28_release_notes#Request_to_test_and_prepare_for_TLS_1.3.