🐛 fix(assign-bot): should use github.rest.* [no ci]

Author: webup

.github/workflows/assign-bot.yml

@@ -34,7 +34,7 @@ jobs:
 
             if (!isFromPulls && commentBody && commentBody.indexOf("/assign") == 0) {
               if (!issue.assignees || issue.assignees.length === 0) {
-                await github.issues.addAssignees({
+                await github.rest.issues.addAssignees({
                   owner: issue.owner,
                   repo: issue.repo,
                   issue_number: issue.number,