Add some eng prod owners to PRESUBMIT.py.

Bug: webrtc:13836
Change-Id: I6c8dd171aad03609802a4974a0b06437359673ec
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/256002
Reviewed-by: Christoffer Jansson <jansson@google.com>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Jeremy Leconte <jleconte@google.com>
Cr-Commit-Position: refs/heads/main@{#36243}

OWNERS

@@ -18,3 +18,5 @@ per-file WATCHLISTS=*
 per-file native-api.md=mbonadei@webrtc.org
 per-file ....lua=titovartem@webrtc.org
 per-file .style.yapf=jleconte@webrtc.org
+per-file .py=jansson@webrtc.org
+per-file .py=jleconte@webrtc.org

sdk/android/OWNERS

@@ -7,3 +7,6 @@ ssilkin@webrtc.org
 magjed@webrtc.org
 xalep@webrtc.org
 per-file ...Audio*.java=henrika@webrtc.org
+
+per-file PRESUBMIT.py=jansson@webrtc.org
+per-file PRESUBMIT.py=jleconte@webrtc.org