[profiler] Make ulan@ an owner of heap related files in src/profiler

Change-Id: I7993bf1d27c0b7a148e776c7c2eddf4ebe76da6e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1892951Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64720}

src/profiler/OWNERS

 alph@chromium.org
 petermarshall@chromium.org
 
+per-file *heap*=ulan@chromium.org
+
 # COMPONENT: Platform>DevTools>JavaScript