Updated expiry milestone for password manager onboarding flag

Change-Id: I5851f65b70bf3ae575431220554d1d305a1c57d9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1917767Reviewed-by: Vasilii Sukhanov <vasilii@chromium.org>
Commit-Queue: Ioana Pandele <ioanap@chromium.org>
Cr-Commit-Position: refs/heads/master@{#715652}

chrome/browser/flag-metadata.json

@@ -3005,8 +3005,8 @@
   },
   {
     "name": "password-manager-onboarding-android",
-    "owners": ["achulkov", "ioanap"],
-    "expiry_milestone": 80
+    "owners": ["ioanap"],
+    "expiry_milestone": 82
   },
   {
     "name": "PasswordImport",