Bump default user agent string

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

@@ -17,6 +17,6 @@ class NetworkPreferences(
     }
 
     fun defaultUserAgent(): Preference<String> {
-        return preferenceStore.getString("default_user_agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:105.0) Gecko/20100101 Firefox/105.0")
+        return preferenceStore.getString("default_user_agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:106.0) Gecko/20100101 Firefox/106.0")
     }
 }