feat: use uv instead of poetry for CI, docker and development (#3325)

Co-authored-by: arcbtc <ben@arc.wales>

lnbits/exceptions.py

@@ -1,7 +1,6 @@
 import sys
 import traceback
 from http import HTTPStatus
-from typing import Optional
 
 from fastapi import FastAPI, HTTPException, Request
 from fastapi.exceptions import RequestValidationError
@@ -30,7 +29,7 @@ class UnsupportedError(Exception):
     pass
 
 
-def render_html_error(request: Request, exc: Exception) -> Optional[Response]:
+def render_html_error(request: Request, exc: Exception) -> Response | None:
     # Only the browser sends "text/html" request
     # not fail proof, but everything else get's a JSON response