Bump Vitest test timeout

Author: lorisleiva

clients/js/vitest.config.ts

@@ -3,6 +3,6 @@ import { defineConfig } from 'vitest/config';
 export default defineConfig({
     test: {
         environment: 'node',
-        testTimeout: 10000,
+        testTimeout: 15000,
     },
 });