fix(lint): add nolint comments for gosec G201/G104 in dolt storage

The SQL formatting warnings (G201) are safe because:
- Placeholders only contain "?" markers for parameterized queries
- WHERE/SET clauses use validated column names with ? placeholders
- Refs are validated by validateRef() before use in AS OF queries
- LIMIT values are safe integers from filter.Limit

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

internal/storage/dolt/transaction.go

@@ -137,6 +137,7 @@ func (t *doltTransaction) UpdateIssue(ctx context.Context, id string, updates ma
 	}
 
 	args = append(args, id)
+	// nolint:gosec // G201: setClauses contains only column names (e.g. "status = ?"), actual values passed via args
 	query := fmt.Sprintf("UPDATE issues SET %s WHERE id = ?", strings.Join(setClauses, ", "))
 	_, err := t.tx.ExecContext(ctx, query, args...)
 	return err