Order draft-28 over draft-23.

This doesn't particularly matter since most clients don't typically
advertise both versions, but we should presumably prefer the newer one.

Change-Id: If636e446c6af2049fc5743eb5fef04b780b29af9
Reviewed-on: https://boringssl-review.googlesource.com/29445
Commit-Queue: Steven Valdez <svaldez@google.com>
Reviewed-by: Steven Valdez <svaldez@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
diff --git a/ssl/ssl_versions.cc b/ssl/ssl_versions.cc
index 9588dd3..0f55066 100644
--- a/ssl/ssl_versions.cc
+++ b/ssl/ssl_versions.cc
@@ -57,8 +57,8 @@
 // decreasing preference.
 
 static const uint16_t kTLSVersions[] = {
-    TLS1_3_DRAFT23_VERSION,
     TLS1_3_DRAFT28_VERSION,
+    TLS1_3_DRAFT23_VERSION,
     TLS1_2_VERSION,
     TLS1_1_VERSION,
     TLS1_VERSION,