Grant chromeos-ci-release-bot-mpa push+read access to chromiumos

Bug: 400504268
Change-Id: Ib79ca897bdd117a5d3cf09ef23d1d610bca91aa0
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/+/6320394
Reviewed-by: Rachael Newitt <renewitt@google.com>

project.config

diff --git a/project.config b/project.config
index c62c941..e6c8c3f 100644
--- a/project.config
+++ b/project.config
@@ -23,6 +23,7 @@
 	owner = group Administrators
 	owner = group chromeos-build-owners
 	read = group Administrators
+	read = group chromeos-ci-release-bot-mpa
 	read = group chromeos-committers
 	read = group chromeos-scoped@luci-project-accounts.iam.gserviceaccount.com
 	read = group chromeos-service-account
@@ -38,6 +39,7 @@
 	submit = group chromeos-scoped@luci-project-accounts.iam.gserviceaccount.com
 	submit = group chromium-git-push
 	push = group chromeos-bots
+	push = group chromeos-ci-release-bot-mpa
 	push = group chromium-git-push
 	labelAs-Commit-Queue = +0..+2 group chrome-commit-bot
 	labelAs-Commit-Queue = +0..+2 group chromeos-bots