Update pyproject.toml (#538)

Author: Quan666

pyproject.toml

@@ -13,7 +13,7 @@ repository = "https://github.com/Quan666/ELF_RSS"
 keywords = ["nonebot", "nonebot2", "rss" ,"elf" ,"rsshub"]
 
 [tool.poetry.dependencies]
-python = "^3.12.6"
+python = "^3.9.0"
 aiohttp = {extras = ["speedups"], version = "^3.10.5"}
 arrow = "^1.3.0"
 async-timeout = "^4.0.3"