fix: contributor should not be considered as committer
diff --git a/index.js b/index.js
index f93bd41..0563fc7 100644
--- a/index.js
+++ b/index.js
@@ -173,5 +173,5 @@
 }
 
 function isCommitter(auth) {
-    return auth === 'COLLABORATOR' || auth === 'MEMBER' || auth === 'OWNER' || auth === 'CONTRIBUTOR';
+    return auth === 'COLLABORATOR' || auth === 'MEMBER' || auth === 'OWNER';
 }