Update dependency uvicorn to v0.28.0

Author: renovate[bot]

poetry.lock

@@ -10,7 +10,7 @@ packages = [{include = "bss_web_file_server", from = "src"}]
 python = "^3.12"
 fastapi = "0.109.2"
 pillow = "10.2.0"
-uvicorn = {extras = ["standard"], version = "0.27.1"}
+uvicorn = {extras = ["standard"], version = "0.28.0"}
 python-multipart = "0.0.9"
 pillow-avif-plugin = "1.4.3"
 pytest-mock = "^3.12.0"