Support webauthn (#17957)

Migrate from U2F to Webauthn

Co-authored-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

vendor/github.com/google/certificate-transparency-go/AUTHORS

@@ -0,0 +1,27 @@
+# This is the official list of benchmark authors for copyright purposes.
+# This file is distinct from the CONTRIBUTORS files.
+# See the latter for an explanation.
+#
+# Names should be added to this file as:
+#	Name or Organization <email address>
+# The email address is not required for organizations.
+#
+# Please keep the list sorted.
+
+Comodo CA Limited
+Ed Maste <emaste@freebsd.org>
+Fiaz Hossain <fiaz.hossain@salesforce.com>
+Google Inc.
+Internet Security Research Group
+Jeff Trawick <trawick@gmail.com>
+Katriel Cohn-Gordon <katriel.cohn-gordon@cybersecurity.ox.ac.uk>
+Laël Cellier <lael.cellier@gmail.com>
+Mark Schloesser <ms@mwcollect.org>
+NORDUnet A/S
+Nicholas Galbreath <nickg@client9.com>
+Oliver Weidner <Oliver.Weidner@gmail.com>
+PrimeKey Solutions AB
+Ruslan Kovalov <ruslan.kovalyov@gmail.com>
+Venafi, Inc.
+Vladimir Rutsky <vladimir@rutsky.org>
+Ximin Luo <infinity0@gmx.com>