[CryptAuth v2] Extend CryptAuth v2 flag expiration milestones

Change-Id: I3ee3371c1f7ca450ba85d78896ddc641600ec97f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2518400
Commit-Queue: Josh Nohle <nohle@chromium.org>
Commit-Queue: James Vecore <vecore@google.com>
Auto-Submit: Josh Nohle <nohle@chromium.org>
Reviewed-by: James Vecore <vecore@google.com>
Cr-Commit-Position: refs/heads/master@{#823711}

chrome/browser/flag-metadata.json

@@ -724,17 +724,17 @@
   {
     "name": "cryptauth-v2-device-activity-status",
     "owners": [ "khorimoto", "nohle", "themaxli" ],
-    "expiry_milestone": 89
+    "expiry_milestone": 93
   },
   {
     "name": "cryptauth-v2-devicesync",
     "owners": [ "khorimoto", "nohle" ],
-    "expiry_milestone": 89
+    "expiry_milestone": 93
   },
   {
     "name": "cryptauth-v2-enrollment",
     "owners": [ "khorimoto", "nohle" ],
-    "expiry_milestone": 89
+    "expiry_milestone": 93
   },
   {
     "name": "cups-ipp-printing-backend",
@@ -889,7 +889,7 @@
   {
     "name": "disable-cryptauth-v1-devicesync",
     "owners": [ "khorimoto", "nohle" ],
-    "expiry_milestone": 90
+    "expiry_milestone": 93
   },
   {
     "name": "disable-explicit-dma-fences",