Unable to upload/load a tool.
### System Info

- transformers version: 4.31.0
- Platform: Windows-10-10.0.22621-SP0
- Python version: 3.11.3
- Huggingface_hub version: 0.16.4
- Safetensors version: 0.3.1
- Accelerate version: 0.21.0
- Accelerate config:    not found
- PyTorch version (GPU?): 2.0.1+cu118 (True)
- Tensorflow version (GPU?): not installed (NA)
- Flax version (CPU?/GPU?/TPU?): not installed (NA)
- Jax version: not installed
- JaxLib version: not installed

### Who can help?

_No response_

### Information

- [X] The official example scripts
- [ ] My own modified scripts

### Tasks

- [ ] An officially supported task in the `examples` folder (such as GLUE/SQuAD, ...)
- [ ] My own task or dataset (give details below)

### Reproduction

When pushing my tool to the hub with the following function, I'm getting an error.

```python
tool.push_to_hub("romainlg/hf-sql")
```

```
Traceback (most recent call last):
  File "d:\Devs\python\ai\tools\sql\main.py", line 4, in <module>
    tool.push_to_hub("romainlg/hf-sql")
  File "C:\Python311\Lib\site-packages\transformers\tools\base.py", line 315, in push_to_hub
    metadata_update(repo_id, {"tags": ["tool"]}, repo_type="space")
  File "C:\Python311\Lib\site-packages\huggingface_hub\utils\_validators.py", line 118, in _inner_fn
    return fn(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\huggingface_hub\repocard.py", line 810, in metadata_update
    return card.push_to_hub(
           ^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\huggingface_hub\repocard.py", line 275, in push_to_hub
    tmp_path.write_text(str(self))
  File "C:\Python311\Lib\pathlib.py", line 1079, in write_text
    return f.write(data)
           ^^^^^^^^^^^^^
  File "C:\Python311\Lib\encodings\cp1252.py", line 19, in encode
    return codecs.charmap_encode(input,self.errors,encoding_table)[0]
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
UnicodeEncodeError: 'charmap' codec can't encode character '\U0001f525' in position 27: character maps to <undefined>
```


I bypassed it by saving the tool and then uploading it to the hub but when trying to import it later, I'm getting:

```python
tool.save('./hf-sql-tmp')
```

```python
from transformers import load_tool

sql = load_tool("romainlg/hf-sql")
```

```
Traceback (most recent call last):
  File "d:\Devs\python\ai\tools\sql\test.py", line 5, in <module>
    sql = load_tool("romainlg/hf-sql")
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\transformers\tools\base.py", line 690, in load_tool
    return Tool.from_hub(task_or_repo_id, model_repo_id=model_repo_id, token=token, remote=remote, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\transformers\tools\base.py", line 245, in from_hub
    raise EnvironmentError(
OSError: romainlg/hf-sql does not appear to provide a valid configuration in `tool_config.json` or `config.json`.
```

However, by looking at the other working tools, i've the same config base...
I don't know what's the issue here...

The full code is available at [https://huggingface.co/romainlg/hf-sql/tree/main](https://huggingface.co/romainlg/hf-sql/tree/main)

Thank you !


### Expected behavior

Be able to push the tool to the hub and the ability to load the tool from the hub.
Hi @Romainlg29, thanks for reporting this issue! 

Could you update the issue information with the full running environment info: run `transformers-cli env` in the terminal and copy-paste the output? 

cc @LysandreJik <|||||>Hi,

I just updated the config, which is:

```
transformers version: 4.31.0
Platform: Windows-10-10.0.22621-SP0
Python version: 3.11.3
Huggingface_hub version: 0.16.4
Safetensors version: 0.3.1
Accelerate version: 0.21.0
Accelerate config: not found
PyTorch version (GPU?): 2.0.1+cu118 (True)
Tensorflow version (GPU?): not installed (NA)
Flax version (CPU?/GPU?/TPU?): not installed (NA)
Jax version: not installed
JaxLib version: not installed
```

Thank you for your reply.