[fix] remove dead invidious instances from the settings

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

searx/settings.yml

@@ -1079,14 +1079,8 @@ engines:
     # Instanes will be selected randomly, see https://api.invidious.io/ for
     # instances that are stable (good uptime) and close to you.
     base_url:
-      - https://invidious.io.lol
-      - https://invidious.fdn.fr
-      - https://yt.artemislena.eu
-      - https://invidious.tiekoetter.com
-      - https://invidious.flokinet.to
-      - https://vid.puffyan.us
-      - https://invidious.privacydev.net
-      - https://inv.tux.pizza
+      - https://invidious.adminforge.de
+      - https://inv.nadeko.net
     shortcut: iv
     timeout: 3.0
     disabled: true