fix toml import

Author: iamlemec

oneping/providers.py

@@ -273,7 +273,8 @@ def transcribe_response_openai(audio):
 # fault tolerant toml loader
 def load_toml(file):
     if os.path.exists(file):
-        return tomllib.load(file)
+        with open(file) as fid:
+            return tomllib.load(fid)
     else:
         return {}