Grant abandon permission for mdb/jetstream-releng

So https://chromium-review.googlesource.com/c/chromiumos/chromite/+/6323786 can be restored by wifi members

Bug: 403286626
Change-Id: I1be05589a4ef58904228bbbe61ccb41213a456e5
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/+/6535052
Reviewed-by: Mike Frysinger <vapier@chromium.org>

project.config

diff --git a/project.config b/project.config
index 21ffb6d..182ef23 100644
--- a/project.config
+++ b/project.config
@@ -187,6 +187,7 @@
 	label-Code-Review = -2..+2 group mdb/jetstream-chromeos-full-committers
 	label-Owners-Override = +0..+1 group mdb/jetstream-chromeos-full-committers
 	push = +force group mdb/jetstream-releng
+	abandon = group mdb/jetstream-releng
 [access "^refs/heads/stabilize-testbranch-15185\\.10.*"]
 	create = group chromeos-ci-release-staging-bot-mpa
 	create = group chromeos-staging-bot