feat: migrate audit log ids to bigints (blocking migration for EE)

backend/migrations/20250728084742_migrate_audit_log_to_bigint.down.sql

@@ -0,0 +1 @@
+-- Add down migration script here

backend/migrations/20250728084742_migrate_audit_log_to_bigint.up.sql

@@ -0,0 +1,2 @@
+ALTER TABLE audit ALTER COLUMN id TYPE bigint;
+ALTER SEQUENCE audit_id_seq AS bigint;

backend/windmill-audit/src/lib.rs

@@ -17,7 +17,7 @@ pub enum ActionKind {
 #[derive(FromRow, Serialize, Deserialize)]
 pub struct AuditLog {
     pub workspace_id: String,
-    pub id: i32,
+    pub id: i64,
     pub timestamp: chrono::DateTime<chrono::Utc>,
     pub username: String,
     pub operation: String,