Add ssilkin@webrtc to OWNERS in video/

Bug: none
Change-Id: Ie5b5e339634c07d260cc3e10312f97aad63fa552
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/357180
Reviewed-by: Erik Språng <sprang@webrtc.org>
Commit-Queue: Sergey Silkin <ssilkin@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#42633}
diff --git a/common_video/OWNERS b/common_video/OWNERS
index 455e247..1c08087 100644
--- a/common_video/OWNERS
+++ b/common_video/OWNERS
@@ -1,4 +1,5 @@
 magjed@webrtc.org
 marpan@webrtc.org
 sprang@webrtc.org
+ssilkin@webrtc.org
 stefan@webrtc.org
diff --git a/modules/video_coding/OWNERS b/modules/video_coding/OWNERS
index 2e4d968..5073079 100644
--- a/modules/video_coding/OWNERS
+++ b/modules/video_coding/OWNERS
@@ -4,4 +4,5 @@
 marpan@webrtc.org
 philipel@webrtc.org
 sprang@webrtc.org
+ssilkin@webrtc.org
 stefan@webrtc.org
diff --git a/video/OWNERS b/video/OWNERS
index 2206a59..3a278f3 100644
--- a/video/OWNERS
+++ b/video/OWNERS
@@ -3,4 +3,5 @@
 mflodman@webrtc.org
 philipel@webrtc.org
 sprang@webrtc.org
+ssilkin@webrtc.org
 stefan@webrtc.org