Update default user agent string

core/src/main/java/eu/kanade/tachiyomi/network/NetworkPreferences.kt

@@ -19,7 +19,7 @@ class NetworkPreferences(
     fun defaultUserAgent(): Preference<String> {
         return preferenceStore.getString(
             "default_user_agent",
-            "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/114.0",
+            "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/118.0",
         )
     }
 }