fix: suppress false positive G304 (hardcoded paths in test utility)

backend/testutils/testdb/testdb.go

@@ -319,7 +319,7 @@ func migrateSchema(ctx context.Context, conn *pgxpool.Conn) error {
 
 	var schemaSQL string
 	for _, p := range paths {
-		if data, err := os.ReadFile(p); err == nil {
+		if data, err := os.ReadFile(p); err == nil { // #nosec G304
 			schemaSQL = string(data)
 			break
 		}