String with unicode fails during put

Create a file with 'En DASH' (\u2013)

$ cat >input.txt<<EOF
\s+–\s
EOF

Put the file to etcd

$ cat >save.py<<EOF
from etcd3gw.client import Etcd3Client

with open("input.txt", "r") as file:
    data = file.read()

client = Etcd3Client(host='localhost', port=2379, api_path='/v3beta/')
client.put("/test",data)
EOF

$ python3 save.py
Traceback (most recent call last):
  File "/home/ubuntu/save.py", line 7, in <module>
    client.put("/test",data)
  File "/home/ubuntu/.local/lib/python3.10/site-packages/etcd3gw/client.py", line 189, in put
    "value": _encode(value)
  File "/home/ubuntu/.local/lib/python3.10/site-packages/etcd3gw/utils.py", line 28, in _encode
    data = str(data).encode("latin-1")
UnicodeEncodeError: 'latin-1' codec can't encode character '\u2013' in position 3: ordinal not in range(256)