Update Token Binding TLS Extension number to IANA-allocated number

BUG=467312

Review URL: https://codereview.chromium.org/1675693002

Cr-Original-Commit-Position: refs/heads/master@{#373877}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: b5ad8a80d5e4bfebb071382166f096df3fdacd1e
3 files changed