[Lens]Update omnibox copied image flag expiry

Bug: 1489924
Change-Id: Id1b1f128d25b5a4fc1afd6ba36b3e62e3b9e7bc0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5002993
Auto-Submit: Jason Hu <hujasonx@google.com>
Reviewed-by: Juan Mojica <juanmojica@google.com>
Commit-Queue: Jason Hu <hujasonx@google.com>
Commit-Queue: Juan Mojica <juanmojica@google.com>
Cr-Commit-Position: refs/heads/main@{#1219151}

chrome/browser/flag-metadata.json

@@ -2939,7 +2939,7 @@
   {
     "name": "enable-lens-in-omnibox-copied-image",
     "owners": [ "schechter@chromium.org", "hujasonx@chromium.org" ],
-    "expiry_milestone": 120
+    "expiry_milestone": 125
   },
   {
     "name": "enable-lens-ping",