Potential fix for code scanning alert no. 3: Insecure randomness

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: jkyberneees

src/load-balancer/http-load-balancer.ts

@@ -10,6 +10,7 @@ import type {
 } from '../interfaces/load-balancer'
 import type { Logger } from '../interfaces/logger'
 import { defaultLogger } from '../logger/pino-logger'
+import * as crypto from 'crypto';
 
 /**
  * Internal target with additional tracking data
@@ -421,7 +422,9 @@ export class HttpLoadBalancer implements LoadBalancer {
   }
 
   private generateSessionId(): string {
-    return Math.random().toString(36).substring(2) + Date.now().toString(36)
+    const randomPart = crypto.randomBytes(16).toString('hex'); // 16 bytes = 32 hex characters
+    const timestampPart = Date.now().toString(36);
+    return randomPart + timestampPart;
   }
 
   private getClientId(request: Request): string {