fix(deps): update dependency flexsearch to v0.8.164

Author: renovate[bot]

frontend/package.json

@@ -85,7 +85,7 @@
     "dompurify": "3.2.5",
     "fast-deep-equal": "3.1.3",
     "flatpickr": "4.6.13",
-    "flexsearch": "0.7.43",
+    "flexsearch": "0.8.164",
     "floating-vue": "5.2.2",
     "is-touch-device": "1.0.1",
     "klona": "2.0.6",