fix: deserialize from member to admin (openobserve#7047)

`member` role should also be deserialized to the `admin` role.

Author: Subhra264

src/infra/src/table/migration/m20241227_000400_populate_users_table.rs

@@ -175,7 +175,7 @@ mod meta {
     pub enum UserRole {
         #[serde(rename = "root")]
         Root = 0,
-        #[serde(rename = "admin")]
+        #[serde(rename = "admin", alias = "member")]
         Admin = 1,
         #[serde(rename = "editor")]
         Editor = 2,