Update Gerrit permissions for global service users (built at http://cl/893733512)

Added permissions:
  Section [refs/heads/*]:
    Read:
      ALLOW: SLSA Policy Verification Service Accounts
    label-SLSA-Policy-Verified:
      ALLOW: SLSA Policy Verification Service Accounts

groups

diff --git a/groups b/groups
index 828f599..de46db2 100644
--- a/groups
+++ b/groups
@@ -1,7 +1,8 @@
-# UUID                   	Group Name
+# UUID                                  	Group Name
 #
-global:Anonymous-Users   	Anonymous Users
-global:Project-Owners    	Project Owners
-global:Registered-Users  	Registered Users
-ldap:manganese-gob       	ldap/manganese-gob
-ldap:manganese-gob-admins	ldap/manganese-gob-admins
+46e59dd3f263fe8298031896d41a9a92885b548f	SLSA Policy Verification Service Accounts
+global:Anonymous-Users                  	Anonymous Users
+global:Project-Owners                   	Project Owners
+global:Registered-Users                 	Registered Users
+ldap:manganese-gob                      	ldap/manganese-gob
+ldap:manganese-gob-admins               	ldap/manganese-gob-admins

project.config

diff --git a/project.config b/project.config
index d76d28c..2bac327 100644
--- a/project.config
+++ b/project.config
@@ -33,6 +33,8 @@
 	submit = group ldap/manganese-gob-admins
 	editTopicName = +force group Project Owners
 	editTopicName = +force group ldap/manganese-gob-admins
+	label-SLSA-Policy-Verified = -1..+1 group SLSA Policy Verification Service Accounts
+	Read = group SLSA Policy Verification Service Accounts
 [access "refs/meta/config"]
 	exclusiveGroupPermissions = read
 	read = group Project Owners