[OWNERS] Add dinfuehr@ to COMMON_OWNERS

Change-Id: I826830e3eee1a597af183852ac8ab9f07706a8cf
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1992429Reviewed-by: Hannes Payer <hpayer@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65700}

COMMON_OWNERS

@@ -7,6 +7,7 @@ cbruni@chromium.org
 clemensb@chromium.org
 danno@chromium.org
 delphick@chromium.org
+dinfuehr@chromium.org
 gdeepti@chromium.org
 gsathya@chromium.org
 hablich@chromium.org