Exclude .DS_Store files from flutter tts assets (#1238)

@@ -21,6 +21,7 @@ def main():
         ".sh",
         ".sh",
         "*.md",
         "*.md",
         "MODEL_CARD",
         "MODEL_CARD",
+        ".DS_Store",
     ]
     ]
     sep = "    "
     sep = "    "
     ss = []
     ss = []