Rename can_admin? -> can_perform_gem_admin?

This variant feels cleaner to me. Hopefully others will agree.

Author: landongrindheim

app/models/gem_permissions.rb

@@ -18,7 +18,7 @@ def can_manage_owners?
     role_granted?(:owner)
   end
 
-  def can_admin?
+  def can_perform_gem_admin?
     role_granted?(:admin)
   end
 

app/policies/rubygem_policy.rb

@@ -13,19 +13,19 @@ def create?
   end
 
   def configure_oidc?
-    gem_permissions.can_admin? || deny
+    gem_permissions.can_perform_gem_admin? || deny
   end
 
   def configure_trusted_publishers?
-    gem_permissions.can_admin? || deny
+    gem_permissions.can_perform_gem_admin? || deny
   end
 
   def show_events?
     gem_permissions.can_push? || deny
   end
 
   def show_unconfirmed_ownerships?
-    gem_permissions.can_admin? || deny
+    gem_permissions.can_perform_gem_admin? || deny
   end
 
   def add_owner?