[OWNERS] Add release-prod-builder account to third_party

release-prod-builder is used to roll submodule changes to release
branches. We need owners permission to submit the change. This change
also needs to be cherry picked into the release branches.

Bug: b/291820883
Change-Id: I13f64c8a97aae1896f3e959e86a4698a98dd64b4
Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/893615
Reviewed-by: Anthony Fandrianto <atyfto@google.com>
Commit-Queue: Yuping Zhai <yupingz@google.com>
(cherry picked from commit 0a561415153330720a2d93eb3bdd87827517ff7e)
diff --git a/third_party/OWNERS b/third_party/OWNERS
index fbb0a25..63a995d 100644
--- a/third_party/OWNERS
+++ b/third_party/OWNERS
@@ -2,6 +2,7 @@
 # jiri manigest changes into fuchsia.git.
 # TODO(b/253329946): Remove OWNERS file once submodules are the source of truth in fuchsia.git.
 global-integration-roller@fuchsia-infra.iam.gserviceaccount.com #{LAST_RESORT_SUGGESTION}
+releases-prod-builder@fuchsia-infra.iam.gserviceaccount.com #{LAST_RESORT_SUGGESTION}
 # Include users to debug submodules.
 nmulcahey@google.com #{LAST_RESORT_SUGGESTION}
 yupingz@google.com #{LAST_RESORT_SUGGESTION}