Fix auto assign on issue comment

Previously the action was checking always whether the author of the
issue was one of the maintainers instead of whether the comment was
created by a none-maintainer.

.github/workflows/issue-auto-assign.yml

@@ -24,7 +24,7 @@ jobs:
             const assigneeCount = 1;
 
             // Do not automatically assign users if someone was already assigned or it was opened by a maintainer
-            if (context.payload.issue.assignees.length > 0 || assignees.includes(context.payload.issue.user.login)) {
+            if (context.payload.issue.assignees.length > 0 || assignees.includes(context.actor)) {
               return;
             }
             const crypto = require("node:crypto");