Weird behaviour of multi-line using triple quotes notation f-string containing emoji

[mboutet]

pyupgrade 3.17.0 transforms:

f"""
😃{foo}
"""

into:

f"""
😃{fo{foo}
"""

which is invalid Python syntax.

The above example has been simplified to the minimal working example I could come up with.

Python version is 3.12.4 if that matters.

Thank you!

[asottile]

please search for duplicates there are at least two