Mistake in migration scripts

backend/migrations/0040_time_report_collections.sql

@@ -1,7 +1,7 @@
-CREATE TABLE IF NOT EXISTS user_roles (
+CREATE TABLE IF NOT EXISTS report_collection (
-  user_id INTEGER NOT NULL,
+  id INTEGER PRIMARY KEY,
   project_id INTEGER NOT NULL,
-  role STRING NOT NULL,
+  date DATE NOT NULL,
-  FOREIGN KEY (user_id) REFERENCES users (id)
+  signed_by INTEGER, -- NULL if not signed
-  FOREIGN KEY (project_id) REFERENCES projects (id)
+  FOREIGN KEY (signed_by) REFERENCES users (id)
 );