[OWNERS] Add solanes@ to COMMON_OWNERS

Change-Id: I68e716ee664ae2295089ee4d6af6a0ea6dbf1c1e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1624789
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Auto-Submit: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61744}

COMMON_OWNERS

@@ -29,6 +29,7 @@ petermarshall@chromium.org
 rmcilroy@chromium.org
 sergiyb@chromium.org
 sigurds@chromium.org
+solanes@chromium.org
 szuend@chromium.org
 tebbi@chromium.org
 titzer@chromium.org