Push flag cross-origin-opener-policy-reporting expiration to M86

also add Arthur as an owner as this has indrect implications to his
work on access-reporting.


Bug: 1059303
Change-Id: I5c579f89894dddb637ffeb3d1879249434cfd42e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2351998
Auto-Submit: Pâris Meuleman <pmeuleman@chromium.org>
Reviewed-by: Camille Lamy <clamy@chromium.org>
Commit-Queue: Camille Lamy <clamy@chromium.org>
Commit-Queue: Pâris Meuleman <pmeuleman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#797281}

chrome/browser/flag-metadata.json

@@ -678,8 +678,8 @@
   },
   {
     "name": "cross-origin-opener-policy-reporting",
-    "owners": [ "ahemery", "clamy", "pmeuleman" ],
-    "expiry_milestone": 85
+    "owners": [ "ahemery", "arthursonzogni", "clamy", "pmeuleman" ],
+    "expiry_milestone": 86
   },
   {
     "name": "crostini-disk-resizing",