Change Mimic2 preloaded cache

buildroot-external/rootfs-overlay/etc/mycroft/mycroft.conf

@@ -35,9 +35,9 @@
     "ovos-tts-plugin-mimic2": {
       "lang": "en-us",
       "url": "https://mimic-api.mycroft.ai/synthesize?text=",
-      "preloaded_cache": "/home/mycroft/.cache/mycroft/preloaded_cache/Mimic2"
-    },
-    "pulse_duck": true
+      "preloaded_cache": "/home/mycroft/.local/share/Mimic2TTSPlugin/default/en-us",
+      "fallback_module": "ovos-tts-plugin-mimic"
+    }
   },
   "skills": {
     "wait_for_internet": true,